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FAQ onSelection and comparison of portable devices

Help determine the choice � | Selection and Comparison |

Content

Be sure to read the topics:
GENERAL RULES OF THE SECTION;
Terms and jargon.

New products - devices that are not yet on sale, are discussed in the section.New items (redirect).

The FAQ is aimed at the selection and comparison of any portable multifunction devices other than laptop-like. The FAQ will help you learn to better understand the devices and approach the choice wisely, but this FAQ will not be able to replace personal experience. In this FAQ, the question of games is not intentionally affected.

FAQ created for youmainbord, Semyon, bohdan111, HD_Rain.

Any edits, corrections, criticism, additions are accepted, both on the complaint and personal messagesmainbord

Post has been editedmainbord - 04.07.17, 23:15
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Content


1. General issues

2. Operating systems

3. Book readers

4. Navigation devices

5. Devices for watching movies and web pages


Post has been editedmainbord - 04.07.17, 21:18
Reason for editing: WP ->WM
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What you need to know before choosing?

  1. At the moment there are no differences between the tablet, communicator, smartphone, PDA, phone, player, navigator, e-book. These terms are a software feature of the device, that is, the terms mean not a specific type of device (hardware), but the software function of the device, since the devices today simultaneously allow you to read books, play music and movies, play games, and more. The question before the consumer is only how convenient it is to use this function on this device. For market purposes (to earn the maximum amount of money) these terms can be used for anything, so we will not consider market terminology, it’s not important for us as a consumer.
    Therefore, you do not need to look at the name of the device, you need to look at the functions that you need, and select the device from the needs.


  2. No one better than you will be able to choose the most suitable device for you, but for this you need to have a good understanding of the question. All the subtleties do not immediately take into account, the first time you can never buy the most optimal device, if you have never used it. Experience leads to sensible choice, and stupid choice leads to it. The question of choice in most cases is a very subjective question. Most users buy a device just like that, “they say it will come in handy,” and then it lies on the shelf, do not repeat this error, do not go on about advertising. Therefore, before buying, be sure to decide whether you need it or not.


  3. Choose in appearance, style is necessary at the very last moment, when you have already decided on all the other selection parameters. Choose several models for all parameters except the appearance, and at the end choose the one that you like the most outwardly. Your friends, forum users, parents, sellers, do not know your tastes and will not be able to help you in this matter. Since everyone has different tastes, it is useless to ask others what device is more beautiful, more fashionable, in return, you will receive a subjective opinion that will not help you. Moreover, one does not need to ask about this on the forum in this style: “It seems to me that the white edging looks not so glamorous as black, but what do you think?”, This only leads to a huge dispute and nothing more. You can choose the appearance of the device only by watching videos and photos on the Internet, as well as holding the device in your hands. Materials on the appearance of the device does not affect, since most often all materials are painted.


  4. When choosing a device, you should not be limited to certain manufacturers only because your home has a TV of this manufacturer, and you like it, or this company is advised to you by friends, or you once believed that the company produces high-quality products, or you have seen in advertising this company; and vice versa, you have not heard anything at all about the company, or you have heard only bad reviews. The name of the manufacturer and the model name of the device do not speak about the quality of a specific device. All devices are different, each company produces cheap and expensive devices. Of course, each manufacturer has its own peculiarity, marriage, but you should not pay special attention to them.


  5. In an expensive device, a person is looking for flaws, and in a cheap dignity. Often, people tend to take the most powerful and most functional model. This leads to the largest number of disappointments. If the device is more expensive and "cooler" than all, it does not mean that it is better than others or suits you. Now every company is trying to sell their device more expensive, so the price never says about quality and performance. The most common misconception - the identification of the quality and speed of the device with a smooth animation. Let the best animation not work smoothly, but the games and movies will not slow down, moreover, now almost all devices work more or less smoothly, the times of buggy interfaces are long gone.


  6. A common mistake when buying a device is to buy a device with the coolest processor, the largest amount of RAM, high resolution, the newest or most expensive device, and so on. First, performance and quality are not measured by numbers, for example, a processor with a frequency of 1800 MHz will not necessarily work faster than a processor with a frequency of 1500 MHz. Secondly, in most cases, device performance is excessive and even with average performance the device will cope with all tasks. You only overpay a lot, and there will be no obsolescence, the device for 30,000 rubles will become obsolete as quickly as for 10,000 rubles, this is not a home computer that can be bought for three years. If you have an interface or program on your current device, the problem is most likely in the software, and not in the performance of the specific device and replacing it with a faster device will not help, you need to change the program, which is much faster and cheaper. If the screen resolution is greater, it does not mean that you can notice a difference in the quality of images. It often happens that the screen with the same diagonal, but higher resolution, is worse in quality. Therefore, it is not necessary to perceive an increase in one or several numbers in the characteristics as an increase in quality or an increase in productivity. If the number of characteristics is greater, for example, the resolution is higher, the processor frequency is higher, and so on, this does not mean that this device characteristic is better or the device is better overall, basically it is just advertising, creating demand, supply and making money. Improvement of some characteristics leads to deterioration of others. For example, increasing the screen resolution affects such characteristics as the screen response time, the resolution affects the performance of the device and its power consumption; an increase in the processor frequency in most cases does not affect the performance in any way, but it greatly increases power consumption; an increase in the diagonal of the screen will certainly lead to the growth of the device as a whole and so on. The performance of the processor, video accelerator or device as a whole does not depend on the results of synthetic tests. If Samsung Omnia 9 came out, it does not mean that it is better than Samsung Omnia 8, it also does not mean that they are identical devices or devices of the same class. You shouldn't think that a device on a dual-core processor is slower than a device on a quad-core processor, moreover, a device on a dual-core processor as a whole can work faster than a quad-core one.


  7. If everything suits you in your current device, or you don’t know why change it, don’t need to change it. Newer does not mean better, in any case, you need to spend money on a new device, which you can spend on more useful things. Before buying a new device, make sure that it performs all the functions that you need, that you will not lose what you already have.


  8. The words that appear in the model name or device characteristics: 3D, HD, nano, high, super, 4G, and so on, usually have a purely advertising character and say absolutely nothing, so do not pay attention to them.


Post has been editedmainbord - 15.10.13, 12:28
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How to start choosing?

Start your choice with the need to clarify the basic functions of the device that you definitely need. Decide on a set of your needs, and their proportions, how important they are; you need to read books, watch movies, read pages on the Internet, call, listen to music and so on.

The main features of portable devices (the answer to the question why you are buying more than just a phone for yourself):
  1. Making calls (including video calls) through the network of the cellular operator. Ability to record telephone conversations.
  2. Notebook;
  3. Text and multimedia messaging (SMS, MMS) through the network of the cellular operator;
  4. Reading e-books and documents;
  5. Work with office documents (text files, tables and databases, presentations);
  6. Notes: text, voice (voice recorder), etc .;
  7. Dictionaries and translators;
  8. Photographing and recording video;
  9. Navigation: compass, interactive maps, positioning and routing (by ground and metro);
  10. View: previously downloaded videos and movies of any format, as well as streaming video over the Internet or from the network with the ability to output to an external display device;
  11. Listening to FM radio;
  12. Listening to previously downloaded music of any format, as well as streaming music through the Internet or from the network with the ability to output sound to an external device;
  13. View websites (in a full format with support for flash, Java and other languages)
    Internet access through the network of the cellular operator and Wi-Fi and all the resulting opportunities;
  14. VoIP or IP-telephony - voice and video communication via the Internet (Skype, SIP, ICQ, Viber, Whatsapp, Telegram);
  15. Communication:
    - instant messaging services via the Internet, such as ICQ, whatsup, Jabber, etc;
    - social networks;
  16. Email;
  17. Distribution of Internet access (obtained by means of the cellular operator’s network) to other devices via Wi-Fi, USB and Bluetooth (software Wi-Fi access point, USB modem, Bluetooth modem);
  18. USB-drive information;
  19. Reading and writing to external USB-drives;
  20. The use of training and sports programs, specialized engineering, medical and other applications;
  21. Scheduler and alarm;
  22. Calculator;
  23. Stopwatch;
  24. FM transmitter;
  25. Torch;
  26. Games and entertainment.

Next you need to decide on the main technical characteristics.

1) Start the selection with an approximate diagonal of the device screen, taking into account the previously selected functions. You should not dwell on any particular size, decide only on an approximate range that will allow you to fully perform your tasks. Keywordfullyandtaking into account the previously selected functions, because today devices can do everything at once. To read books, especially in pdf or djvu formats, you need a diagonal of 5-10 inches (text formats can also be read 3.5 "); for calls, notebook, diary, on the contrary, the big screen will be superfluous, physical dimensions are more important.

2) The next thing you need to do is decide on the maximum dimensions of the device. Basically, this feature is important for handheld devices with a diagonal of up to 4.5 inches. Determine where you will carry the device: in your pocket, bag, or on your belt. Determine whether you will use the device with only one hand or two. All this affects the choice of device sizes. In any case, it is best to estimate the size by holding the device in your hands and putting it in your pocket. Devices with the same diagonal may have different dimensions and different shapes, someone is thicker, someone is longer, someone is wider. Having identified several devices that suit you with the same diagonal, see the one that is smaller (with other characteristics being equal). Note that in addition to thickness, there is a width, height and weight of the device, which are much more affected by the usability and wearing of the device. For devices with a diagonal of more than 4.5 inches, it is worth paying more attention to the diagonal of the device rather than the physical size, since the device still does not fit into the pocket of the device, and the bag is not so critical as to the size, in the end, you can take a bigger bag. The ease of use with one hand affects the width of the device, which should not exceed an average of 60-70 mm, depending on the size of the hands. The convenience of wearing a device in a jeans pocket is influenced by the height of the device, which, depending on the owner, should not exceed 110-130 mm. The thickness of the device affects only battery capacity and other dimensions.

3) At the third stage, you have already decided what you need and how important it is. Based on this and financial opportunities, determine the maximum amount that you are willing to spend on the device. In the future, you will either be able to choose the cheapest device with the necessary capabilities in this price segment, or you will have to return to this stage and increase the budget. If the financial possibilities of the budget are not allowed to increase, then you will have to go back another step and abandon any possibilities of the device.

4) Next, you need to decide on the operating system (OS) of the device. Currently the most common operating systems are: Android, Windows Mobile (Windows Phone), IOS. There is also Bada OS (used only on Samsung devices) - a low-growth OS, which shouldn’t be particularly focused on. Outdated OS: Symbian, Maemo / MeeGo; At the moment, support for these OSs is completely discontinued, and new devices are not being released on them. OS BlackBerry (used only on devices of the same company, previously known as RIM) - OS for CIS countries is not popular, as devices on this OS are not sold in the CIS, and there is no support for it. A detailed description of each OS is given later in the FAQ. To select an OS, you need to decide whether you are ready to use what the manufacturer has provided you with, or if you want to configure and install all third-party applications. The manufacturer can not configure your device so that they were comfortable to use everything. Therefore, if you do not configure the device, the above list of features will be much shorter and ease of use will fall. Next, you need to decide whether you will buy applications and games, or whether you will put stolen. If you are not ready to install applications on your device and mess around with setting it up in general, this fact is not for you, a smart device requires a smart user, even if it is on an iOS device. Ultimately, there are only two differences between operating systems: 1) the number of software (software), its diversity and quality; 2) the ability to customize and install software, work with files and install hacked software and the simplicity of these actions. Of course, the operating systems are different in appearance, but the appearance can be changed beyond recognition, so the appearance of the OS is not covered in this FAQ. It is very important not to chase the OS version, it no longer means better. It is a very big mistake that the new OS version contains some improvements that cannot be made in the old OS, or that the new OS runs faster and consumes less, in most cases this is not the case, but you can definitely say that the new OS version is more demanding phone will therefore work at least no faster than the old one. The OS version only affects the application support, as a rule, application developers no longer support the old OS, but this happens rather slowly, so you can safely buy a device with the OS version before last.

Post has been editedmainbord - 07.07.17, 02:21
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Secondary technical specifications
  1. The presence or absence of a radio module or several GSM or CDMA radio modules. If you need to use two SIM-cards at the same time you should pay attention to the presence of the second slot, and pay attention to the support of simultaneous operation of two SIM-cards. Manufacturers often do not indicate this, but even on devices with two SIM slots, their simultaneous operation may not be supported. But even if simultaneous work is supported, it is necessary to additionally find out whether it is possible to make a call simultaneously from two SIM-cards, whether it is possible to use high-speed Internet access, etc. at the same time.
    Simpler devices with a single SIM slot may provide hot-swappable SIM cards. This gives an advantage quickly (without turning off the device) and without additional tools to replace the SIM-card;
  2. The presence of Wi-Fi 2.4 and 5 GHz (Internet access, update), Bluetooth (for transferring files and connecting to a headset or to a car stereo), Bluetooth LE (support for smart watches and sports bracelets);
  3. A satellite navigation (GPS) module is required for navigation. If GLONASS, BeiDou or Gelileo is also supported, then the location will be determined more accurately. A-GPS support allows you to speed up a hot start from a few minutes to a few seconds;
  4. Now all portable devices have a USB-connector (except for Apple they have their own) to connect to a personal computer. Separately, you should pay attention that to connect to your device through this connector of USB drives, manipulators and other external devices, USB OTG or USB host must be supported, pay attention to the type of USB connector (B or C), as well as its micro size or mini;
  5. The digital compass will allow to determine the directions of the world and will allow you to navigate in the forest
  6. The presence of video output via HDMI or mini-jack or mhl will allow you to display a picture from the screen of your device on an external display;
  7. If you need video telephony, look for the presence of a front-facing camera;
  8. The presence or absence of touch or mechanical buttons affects usability;
  9. Accelerometer (G-Sensor) allows you to automatically expand the screen depending on the position of the device, as well as control;
  10. The proximity sensor allows you to forget about accidental clicks on the touch screen during a call;
  11. The light sensor allows you to control the screen brightness automatically depending on the ambient light. This not only increases usability, but also saves battery power;
  12. The NFC sensor allows you to read information from some tickets, perform actions on NFC tags, work with some bank cards, transfer files;
  13. FM radio - listening to FM radio;
  14. FM transmitter - output music and other audio signals to the car stereo or any other device with a built-in FM receiver;
  15. Fingerprint sensor - device protection;
  16. Protection against water and dust (for travel lovers and for those who like to talk in the bathroom or in the rain);
  17. Hot swappable memory card.


Post has been editedmainbord - 04.07.17, 19:09
Reason for editing: Small updates
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Display

Main characteristics:
1) Resolution;
2) Diagonal;
3) Type LCD or LED.

It is unlikely that the quality of the screen will be decisive for you when choosing a multifunctional device. The described characteristics will help you when choosing a display, but ultimately, when you already find several models, it is worthwhile to look purely out of your sight what you like best, since only the characteristics do not determine the quality of the screen. Open a book, open some pictures, look through several applications.

1) Optimal resolutions. The optimal resolution will be considered the resolution at which sufficient image clarity is achieved, and performance, power consumption and other characteristics do not deteriorate too much. It should be understood that when the resolution is increased, the performance of the device with the same characteristics drops, while the processor and the video accelerator are loaded, and the power consumption increases, so do not chase the numbers. Therefore, a cheap device with a slow processor runs fast, because it has a small resolution. For a diagonal of 3.2 inches and less, a resolution of 320x480 is enough, for a diagonal of 3.7-4.5 inches, 540x960 (480x800), for a diagonal of 7-10 inches, 800x1280. It often happens that the display with the same diagonal, but higher resolution, is worse in quality. Therefore, no need to chase after the resolution, more is not always better. For example, an increase in the resolution of the LCD display impairs such characteristics as response time and contrast. Note that usually when you increase the resolution, the diagonal of the device also increases, and ultimately the image density remains almost the same.

2) The choice of the diagonal of the device screen is primarily dependent on the tasks used. If you need to read books in PDF or DJVU format, you will need a diagonal of at least 7 inches, if you only need calls and SMS, 3.2 inches will be enough, for the Internet and text books you need at least 4 inches. In any case, before buying a device, it is worth holding it in your hands, or at least holding a model with a similar screen size. When choosing a diagonal, it is worth considering the fact that devices with the same diagonal can have different sizes, for example, a device with a diagonal of 4.3 inches can have a height of both 122 mm and 131, which is very important for a handheld device. Note that increasing the diagonal of the screen will certainly lead to the growth of the device as a whole.

3) Portable devices are manufactured with two types of screens: LCD (liquid crystal, LCD) and LED (AMOLED). Both types of screens, and LCD, and AMOLED are made with a control matrix of thin film transistors (TFT). Almost everywhere the name TFT is associated with the LCD, this is wrong, these are two different things. Also there is such a type of screen as electronic paper (e-ink), it is preferable only for reading books, therefore it is not considered here. When choosing AMOLED or LCD it is impossible to make an unambiguous decision, it is necessary to compare two specific devices side by side and choose the one you like. On the picture or video can not select the screen. There are a lot of varieties of LCD screens, the only variety that can be distinguished is IPS - an LCD screen with increased viewing angles, while such important characteristics of the device are worsened: response time, which is very important for games and movies, contrast and others. Therefore, it cannot be said that the LCD IPS is definitely better than the usual IPS, rather worse. It should be noted that only you use the phone and you generally do not care what viewing angles you always look from one angle and you can always turn the phone. The newer the phone, the better the screen is, even if it is absolutely the same and without any advertising names super, nano, HD, clear, etc. It must be borne in mind that the more expensive the device, the better the screen in it, even if the screen is the same. In practice, on a device for 20,000 with the same resolution and type of screen, a normal LCD and LCD with super, nano, HD, clear posts are almost the same, and you should pay attention to this characteristic only at the very end, it’s foolish to refuse a good processor to the side "nano" screen. Pixel layoutPentile. There are many myths about pentile, for example, that this matrix reduces the screen resolution and worsens the text, it is not. There are several schemes for constructing pentile. A bad attitude to pentile was created on the Internet due to HTC desire, which had a bad screen. AMOLED screens. AMOLED has both pros and cons. This type of screen has a contrast at least an order of magnitude higher than that of LCD screens. The black color on AMOLED is really black and does not glow. AMOLED screen has a greater color gamut and high brightness, but modern LCD screens are not inferior in brightness, and sometimes even win, but at the same time have lower contrast. AMOLED screen noticeably fade with time, for example, for two years the screen brightness drops noticeably. The average power consumption of AMOLED is greater than that of LCDs, but on AMOLED you can save consumption by using black themes. Most AMOLED screens have oversaturated colors, that is, the color gamut on the screen is very different from the real one. Therefore, it is impossible to unequivocally say that the LCD or LED screen is better.

Post has been editedmainbord - 18.09.13, 19:53
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Battery

The main characteristics of the battery:
1) Capacity;
2) Type;
3) Removable or non-removable.

1) When choosing a battery capacity you need to follow the rule: the more the better. But you should not forget that usually a larger screen is inserted into devices with a large battery, and the processor is more powerful, so you shouldn’t be surprised that a new device works less, although the battery is larger, and the battery capacity is usually not increased by 100 300 mAh, which is only 20% as a percentage, and of course it does not even increase by 2 times. It should be understood that power consumption depends mainly on the mode of use of the device by the user, on the operating system, and on its settings. In particular, an exceptional feature of the Android OS is a very flexible power setting. Therefore, you should not pay special attention to the differences in battery capacity within 300 mA / h, so if the battery capacity was raised at least 1000 mA / h, while the other characteristics remained the same, then you should look at the device with a more capacious battery.

2) On modern devices, the most common types of batteries are li-pol and li-ion. You should not pay special attention to this characteristic, since the differences between the types are minimal.

3) This characteristic is important only for those users who wish to achieve maximum autonomy of the device through the use of multiple batteries. If the device is good and it has a non-removable battery, you should not give it up.

FAQ �� ������������� (����� ������ ����������): download



Rules for using lithium batteries: separating the truth from myths
Lithium Batteries - Operating Rules
ACCUMULATORS Li-ion, Ni-mh and Li-Pol: rules for operating batteries for cell phones
Charger for communicators with mini / microUSB
Charger for communicators with mini / microUSB
Li-ion (Li-ion) batteries
Questions and problems with the battery or charger
http://forum.ixbt.com/post.cgi?id=annc:17:133
http://forum.ixbt.com/topic.cgi?id=17:13320

Post has been editedmainbord - 23.07.14, 20:38
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Price

The price is a very important parameter when buying any product, the types of devices that differ in price are described below.

Types of devices purchased:
1) New "white". "White" devices are devices that are officially sold in a given country and have an official warranty in that country. "White" is used only in relation to the country. "White" phone can only be bought in this country. If the device was purchased in the official store of another country, then in your country it will still be "gray", and there will be no guarantee for it. All "white" devices are certified, they are assigned a unique IMEI, they have the official firmware and language for your country.
2) New "gray". “Gray” devices are any non-“white” devices, that is, devices that were brought into the country informally, without certification. The gray device does not always have the language for your country. The gray device has no official warranty in your country.
3) Used. Phones used.
4) New or used from abroad. You shouldn’t be afraid of buying abroad, you can read more about this issue inFAQ on buying portable devices abroad
5) New is not the latest models.

When buying it is worth considering where and which device you will buy. Place of purchase affects only the cost of the device and the official warranty. The possibility of buying from abroad is important for residents of small cities and for buying devices that are not sold in this country. Gray devices are usually much cheaper than whites, but they are not guaranteed. Do not forget that you can buy a used model, they are usually sold much cheaper than new ones. Do not forget that sometimes it is better to buy the old cheap model than the new expensive, the new is not always better.

Post has been edited-del- - 18.04.13, 16:47
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How to ask?

If you want to help you with the choice of device as quickly and effectively as possible, be sure to include the following information:

1) What is the device for (reading books, calls, watching movies, internet, navigation, music, etc.). Write everything you intend to use, if you do not know what you need, or this is your first device, read “key features of portable devices�.
2) Approximate diagonal device
3) Country of purchase, the possibility of buying abroad, a new or used device, white (ROSTEST) or gray (not ROSTEST)
4) Maximum budget
5) Additional functions that the purchased device should have, only if you intend to use them, do not take "to be". For example, the mandatory presence of a front camera, NFC, memory card, two SIM-cards, qwerty-keyboard HDMI output or other characteristics. If you do not plan to use the named functions or do not know whether you need them or not, you do not need to write about them, or ask if they are necessary for your tasks.

What you should not specify:
1) Specifications, specific processors, memory, etc.
2) It is not necessary to write the intended type of device: navigator, tablet, smartphone, communicator, telephone, and so on.

Why it is worth specifying this information is written here:FAQ on the selection and comparison of portable devices (Post # 20027264)

Post has been editedmainbord - 29.06.13, 13:21
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Device for girls

Common topic:Choosing a device for a girl

Choosing a device for a girl today is almost no different from choosing a device for a young man. The only two factors that mainly influence the choice of device for a girl are the size and appearance of the device. Appearance usually means coloring. The choice of size and appearance is described in detail in this FAQ (FAQ on the selection and comparison of portable devices (Post # 20027264)- point 3). Basically, the choice of a device for a girl is reduced to choosing a device according to one or several optimal parameters, for example, the presence of HDMI, the longest operating time, screen size and others. Having selected several models, show them to the living future owner, let her choose superficially what she likes best. Check out the following topics for choosing a device for a girl:

Archive


Post has been editedmainbord - 10.06.14, 20:51
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Photo and video camera

As a rule, most portable devices are more expensive than 15 thousand rubles photographing and shooting video in daylight are pretty good, everyone has autofocus, panorama, location mark, and so on, so choose a device that will shoot a little bit better, but others the functions will be worse, it does not make sense, since if you need to take a picture or video of a memorable day (wedding, graduation, vacation, birthday), it’s still better to take a camera or video camera, ty any camera phone. And for those who buy a device cheaper than 15,000 rubles, the camera is usually not important at all. In the devices of one price segment, there are no differences in the quality of the camera. If the camera of the device has a resolution greater than the other, this does not mean that it is better, most likely the camera will be worse, since the quality of the camera depends mainly on the optics (lens) and the area of ​​the matrix. In the case of increasing the resolution of the matrix, the optics do not improve and the area of ​​the matrix does not change, but the amount of noise grows very strongly, which extremely negatively affects the quality of the photo. As experience shows, a photo resolution of 5MP absolutely enough for any screen from 2 to 64 inches, and for printing on A4 or less. For photographing A4 texts, any cameras on modern devices are suitable. In most cases, the newer the device, the better the camera is. Also pay attention to the modern software functions: HDR photo enhancements, support for saving photos in RAW format, Camera2 API functionality, flash presence and its type both at the rear and at the front camera.

16 megapixels 4608 x 3456
8 megapixels 3264 x 2448
4 megapixels 2272 x 1704
2 megapixels 1600 x 1200

Post has been editedmainbord - 04.07.17, 19:20
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Do I need a mechanical keyboard?

General topic for discussing this issue:Do you need hard keyboard if you type a lot

There is no definite answer to this question. Most people do not type texts on trips in large volumes, so they need to buy a portable device with a mechanical keyboard, keywordmost. Do not forget that the mechanical keyboard can be bought as an accessory. Do not forget about a laptop, or a desktop computer, it is much more convenient to type texts on them. In principle, the touch keyboard displayed on the screen also has a full layout and can be typed on it with both hands, it does not affect the device thickness, usability and screen size. The touch keyboard displayed on the screen can be used, either in landscape or in book mode, and a mechanical keyboard allows only one use. In most cases, the keyboard displayed on the screen is sufficient for all users. If you need to type a large text, it is better to use a convenient keyboard than to lose all the charms of the device because of the mechanical keyboard.

The general advantages of mechanical keyboards: you can type blindly, buttons are felt when typing, more speed.
General disadvantages of mechanical keyboards: the work resource is less than that of conventional devices with a touch screen keyboard, only one use case, either landscape or portrait.

There are two types of mechanical keyboard:
1) Mechanical retractable keyboard. The advantages of the sliding keyboard are that it does not affect the screen size of the device, regarding option 2. The disadvantages are that devices with a sliding keyboard are thicker and you can only use the keyboard in landscape mode with two hands, and you need to open the keyboard before use.
2) Mechanical keyboard on the front panel under the screen. The main disadvantage of this type of mechanical keyboard is that the keyboard greatly reduces the screen of the device, and the screen in turn affects almost all functions of the device can only be used in portrait mode.

Post has been editedmainbord - 21.04.13, 22:20
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Something about laptops

Section to select laptopsLaptops, Tablets, TabletPC, UMPC, MID

Choosing a laptop from choosing a desktop computer is almost the same, so laptops are not considered in this fake. At the choice of laptops there is a factFAQ on the choice of components for the PC. Today it should be noted that mainly laptops differ from other portable devices by the presence of a keyboard, touchpad and a large screen diagonal of 15-17 inches. The laptop necessarily has an x86 or x64 architecture processor and supports the installation of a desktop Windows, Linux or Mac. Lately monoblocks laptops (without the second half of the keyboard and touchpad) with small screen diagonals of about ten inches have been released in tribute to fashion, which made them very similar in appearance to tablet devices. A laptop is much more functional than a tablet, and a laptop completely replaces a desktop computer. The presence of mechanical keyboards in tablet-like devices does not make them at least a step closer to the laptop.

Post has been editedmainbord - 07.04.13, 23:29
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Features of the choice of devices on the Android OS

Among Android devices, unlike IOS and WP, ​​there is a very large selection, all price segments are covered, you can find a device for taste and color, while the differences in characteristics are quite noticeable. Devices on the Androd OS are the most customizable, with the largest number of settings and features and have almost no limitations, but because of this they are somewhat more difficult to use compared to devices on other OSs. When choosing a device, do not chase the OS version, no longer means better. For example, Android 4.1.2 requires 1024 MB of RAM for normal operation, when for 2.3.7 512 MB is enough. Moreover, almost all applications from 4.1.2, you can also install on 2.3.7, and then even a purely external version of the OS will not be different. In any case, the manufacturer of your phone in its firmware greatly modifies the basis of the Google OS, inserts its applications, settings. In most cases, all the improvements and additions reported by Google in the new version of their OS, manufacturers of other devices have long been done and all developments are valid only for Google products. It should be noted that if you are going to configure the device to the full, then you can install absolutely any firmware and any application on your device, so you should not pay attention to the software shell and embedded applications when choosing a device on the Android OS. The Android version affects only application support; as a rule, application developers no longer support old versions of Android, but this happens rather slowly, so you can safely buy a device with the version of Android before last. Before buying, read the reviews about the device, read the discussion topics on the forums. You may need to root or unlock the bootloader, these functions are not available on all devices.

Among the owners of devices on iOS, the myth goes that devices on Android hang all the time, slow down, buggy, and in general they have very bad screens, camera processors, very little work, etc. Of course, this is not true, even cheap Android OS devices for 7,000 rubles, work smoothly, and, all the more, do not hang, and work for quite a long time. The devices on the Android OS for 7,000 rubles, the characteristics, of course, worse than the devices on the IOS, but the devices for 20,000 rubles have the characteristics no worse than the devices on the IOS, and somewhere much better.

Pros:
- Flexibility of the system, each user can customize both the functionality and the appearance for themselves
- All price segments and all functional segments are covered
- A large number of applications for taste and color.
- To install stolen applications do not need to hack the phone, lose the warranty and do any complex actions.

Minuses:
- Relative complexity, in order to fully use all the capabilities of the device, you need to understand how Android works, and configure the device.
- In cheap devices can not appreciate all the advantages of the operating system.

Post has been editedmainbord - 03.12.15, 19:49
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Choosing hardware for Android

The main characteristics of the device that affect its performance and in part on the functionality are:
1) processor;
2) RAM;
3) built-in storage device;
4) video accelerator.

The secondary characteristics of such cameras, flashes, screens and batteries are selected after the main ones, do not forget that this is primarily a computer, and only then a phone, camera, flashlight, and so on.

The named parameters affect the functionality only indirectly. Because even with a very weak processor, a video accelerator and a small amount of memory, devices with the right chips can perform most tasks. For example, an office can be run on almost any android device, but a large file on a device with a small amount of RAM cannot be opened; You can also run games on any device, but with a weak video accelerator, you can forget about the latest achievements of 3D graphics.

In addition to hardware, the performance is greatly affected by software. For example, desktops with the same functionality can work at different speeds on the same device. The program can slow down both on the slowest device and on the fastest. It all depends on the program itself, how well it is written, so before you swear at the program, try a replacement. Applications embedded in the firmware are not always written correctly and therefore can slow down. Most games and programs are written for the slowest devices, so there are really few tasks for which powerful devices are needed.

Now the hardware has reached such a level of development that even devices far from the maximum power allows you to perform all the tasks with the maximum performance. Therefore, even if you make very tough requirements, do not limit yourself to only four nuclear processors and devices with at least 6 GB of RAM. In most cases, you overpay for show off without getting anything in return.

More information about the selection of each component is written in the following messages of this FAQ.

Post has been editedmainbord - 04.07.17, 19:26
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Choosing a processor (board) for Android

The processor in portable devices means the entire board as a whole, since these are not prefabricated systems like desktops and laptops, but systems on a single chip. Please note that manufacturers give the names of the board, not the CPU, which can differ only in the radio module, and the CPU in them will be the same. A good example of Qualcomm msm8260 and Qualcomm msm8960T, although the numbers are different, even though the second one is much larger, but the board performance is exactly the same.

The main characteristics of the CPU:
  1. Processor manufacturer (Nvidia, Qualcomm, TI omap, Samsung, Mediatek, Rockchip, their variations and others);
  2. The number of cores (1,2,4,6,8);
  3. Video accelerator (Andreno, Powervr, Nvidia, Mali, their varieties and others).
  4. The frequency of each core (1000 MHz, 1500 MHz, 3000 MHz, and others);
  5. A set of instructions (roughly speaking armv6 or armv7);
  6. The architecture of the processor core (for example, krait 300 or krait 400);
  7. The technical process (45 nm, 22 nm) affects the maximum frequency and power consumption of the processor.

Do not forget that your phone is not a busy server. In order for messages and the Internet to work, you absolutely do not need 8 cores of 2 GHz each. If you do not need games, then most likely you will fit any processor.
  1. Processor manufacturer. There are many different manufacturers, the most numerous of them are Qualcomm, Mediatek, Samsung, Nvidia, Marvel, TI omap. The end user is unlikely to be able to distinguish by performance or by any other factors what brand of processor he has. It is also impossible to say for sure that some manufacturer makes processors better than another, you need to compare a specific model with a specific model.
  2. The number of processor cores. It is one of the important characteristics when choosing. Single-core models have recently almost left the market of mobile devices. Most devices are made on dual-core processors, they are much faster than single-core processors and are almost as good as 4-core and 8-core processors. If you buy the most powerful device it will not necessarily be a device on 32 cores, it is likely that the device will be dual core. Please note that almost as many cores are not needed and the system is made so that it can use a maximum of 4 cores, the rest are needed to save energy.
  3. Video accelerator. Only the main video accelerators are shown. The video accelerator affects only the performance in games, but usually if the processor is good, then the video accelerator is inserted into it according to the processor level. In principle, the main number of games is done under the slowest accelerators.
    Detailed comparison, reviews and detailed information about video accelerators can be found at the following link:
    Graphic Accelerators
  4. CPU frequency. The frequency in the processor, of course, affects the performance, but not much, you should not pay special attention to it, especially in the most expensive and fast processors. Frequencies in 1500 MHz are quite enough now. Frequency is a digit and more is not always better, so with frequency the power consumption increases and the operation time greatly decreases, while the performance almost does not grow. Comparing the performance of different processors in terms of frequency is meaningless and wrong. In almost all modern phones, the frequency of the processor can be both increased and decreased, and, moreover, quite widely. Please note that if, for example, a manufacturer claims that its 8-core processor operates at 2.5 GHz, this does not mean that all 8 cores can operate at this frequency, most likely the maximum frequency of two cores will be 2.3, two more 1.7 a the other 4 will be disabled, this is due to thermal limitations. Moreover, this is a mobile phone without active cooling, and after a long load (maximum 15 minutes), so that the phone does not overheat, the phone will automatically reduce the frequency to 1 GHz, so modern frequencies do not affect anything at all.
  5. A set of instructions. It is one of the important characteristics when choosing. In Android devices, you can see a lot of processors with different instruction sets ARMv6 (outdated), ARMv7, ARMv7-a, ARMv8-A. Everything is simple. Roughly speaking, the larger the index, the more functional the processor.
  6. Kernel architecture It is a secondary characteristic, but also important. The core architecture directly affects the performance of the processor. That is, two processors with the same frequency and number of cores can differ in performance only due to different core architecture.
  7. The technical process, the newer the processor, the lower the technical process it is doing and the less it consumes and the more you can set the frequency of such a processor and more devices placed on one chip. Therefore, it makes sense to buy new processors with a smaller technical process.


Post has been editedmainbord - 04.07.17, 21:07
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Select the amount of internal storage for Android

The bigger, the better. At the moment, if you buy a device with a 32 GB internal storage drive, you will not limit yourself to anything. In most cases, a device with 16 GB is also suitable for a not very spoiled user. In Android OS in all modern devices, the manufacturer allocates a certain part of the built-in storage device for user data, including in this section volumetric applications store their data, for example, navigation maps or cache for games, which often take about a gigabyte each. The problem may arise in the limited amount of this built-in storage device for user data, since almost all applications write their data to this memory, especially games, and space can quickly end. Given this factor, especially if you want to record a lot of games, you need to take a device with at least 32 GB of internal memory, but it all depends on your needs. In some devices, there are methods for increasing both the internal memory and the section of the internal storage for user data, but these methods should not be taken into account as this is very difficult. A memory card will help to avoid memory problems in 80% of cases, but it will not help in an easy way to save you from problems with the built-in memory and with the built-in section for user data, and perhaps this cannot be done with complex methods.

It is very important to knowWhy the amount of memory device does not meet the specifications?

Post has been editedmainbord - 05.08.15, 22:47
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The choice of RAM for Android

Here the rule is simple, the more memory the better. At the moment in Android devices you can find RAM volumes from 1 GB to 6 GB. For normal operation of Android devices on the version of Android 5.0 and higher, at least 2 GB of RAM is required. For normal operation of Android devices on OS 3.x and 4.x, 1024 MB is enough. For normal operation of Android devices on the Android version not higher than 2.3.7, 512 MB of RAM is enough, and less effectively affecting performance. Of course, if you find a device suitable for you with a memory capacity of 6 GB, you should not refuse it.

It is very important to knowWhy the amount of memory device does not meet the specifications?

Post has been editedmainbord - 04.07.17, 21:11
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Features of the choice of devices on Windows Mobile OS (Windows Phone)

The Windows Mobile operating system (Windows Phone, WM) is incompatible with its predecessor Windows Mobile and its older counterpart desktop OS Windows. That is, applications with WM and desktop Windows will not run on WM. There are not very many hardware differences among the devices on WM, since Windows clearly specifies which type of processor should be, how many buttons there should be and what they should be, these characteristics cannot be compared with those of other OSs. WM is a cross between Android and IOS.

Pros:
1) Original interface

Minuses:
1) Today WM is a growing and developing OS, but software is released several times less than under Android and IOS.
2) Quite a closed OS, in order to change something for the user or to install a stolen application, you need to sweat a lot, but you cannot change anything at all (for example, appearance).
3) Binding products to software, for example, you cannot connect a device to any computer and drop files, music, etc. from it, you must use Zune.
4) On WM at the moment you can not install stolen applications.

Post has been editedmainbord - 08.07.17, 11:48
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Features of choosing devices on iOS

There is almost no choice among devices on the operating system (OS). You either buy the latest model, or the previous one, which is cheaper. What model to choose among IOS to decide on the budget. With the output of the SE series, you can choose the size of the device.

About iOS, the myth goes that devices on IOS have the best screens, processors, they have the most time to work. This, of course, is not true. Devices on IOS are expensive and belong to the most expensive segment, so they insert relatively good hardware. Devices on other operating systems are available in different price segments. Devices on iOS as well as devices on other operating systems are subject to glitches and brakes.

The advantages of devices on iOS include:
1) IOS is initially written for a device on a specific hardware (processor, RAM, video accelerator), so the software is optimized (productivity increases without improving hardware, only by optimizing the code) for a specific device. Consequently, you cannot compare hardware on an IOS device with a device on another operating system. For example, Iphone 6s has 2 GB of RAM, and on Android of the same level 4 GB of RAM is put
2) In IOS, the priority of using resources is in the animation, that is, the image that is shown to the user. Theoretically, this should relieve the animations on the screen. In practice, the device on IOS can be brought to the brakes, and to hang, examples on youtube million. The statement that IOS phones are ideal, does not slow down anywhere, does not hang and is very easy to use - this is a myth. Of course, they work faster than the phone for 5000r, but if you compare them with their counterparts on other operating systems for 20-30 thousand rubles, the analogs also work somewhere even faster.
3) Fixed maximum delay for the response of a user action, for example, tapping the screen. This allows you to implement applications such as piano or other musical instruments without delay.
4) A large number of applications for taste and color.

The principal disadvantages of devices on iOS should include the following:
1) The cost of the device is quite high, especially in the first months of sales; there are no budget options;
2) There is no choice, you can not choose a device with the desired characteristics;
3) There are no fundamental functions of the type: transfer files via Wi-Fi direct or Bluetooth, memory expansion through a memory card, usb-host or usb-otg (connecting USB devices, flash drives, mice, keyboards, etc. is especially important for tablets ), no video output;
4) Quite a closed OS, in order for the user to change something, you need to sweat a lot. In practice, as soon as the user wants to configure something, install additional software, make a jailbreak, the device immediately starts working as he wants;
5) Binding to Apple products and software, for example, you cannot stick a device to any computer and drop music files from it, and so on, it is necessary to use iTunes, or use workarounds. Even the charger uses its own, although other manufacturers have long used universal USB charging.

Post has been editedmainbord - 07.07.17, 02:25
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Features of choosing a device for reading books

E-books sectionEBooks
Check out the topicFAQ on e-books

First of all, you need to decide whether you need a device exclusively for reading books, or you need to still watch movies, browse the Internet, etc. Based on the needs, we first select the type of device screen (LCD or EB), then select the screen diagonal. If you need a device only for reading books, choose e-paper, if multifunctional (reading books, watching movies, the Internet), then choose LCD. For reading text books in text formats (txt, fb2, doc, doc), a diagonal of 4-7 inches will be sufficient, the majority of such devices on the EB are issued with a diagonal of 6 inches. To read books in PDF and DJVU format, a diagonal of 7-10 inches is required. Next you need to decide on the supported formats of books. Now, basically, all reading devices on the DL come with their Linux-based operating system, so expanding the standard set of readable formats by installing third-party software will not work, except for the coolreader program, which can be installed on some devices. But some books are released on the Android OS, which allows you not to think about standard formats, readability and settings of a standard program for reading, since you can always put a third-party program for reading any format. Taking into account the amount of memory when choosing a device for reading text books is not worth it, as the books weigh very little, and there is no need to carry a huge library. It is not necessary to take into account the presence of wi-fi and GSM modules on a device with DL, since you probably never have to use them. When choosing a device for reading it is worth paying special attention to the size and weight of the device, since it is not always possible to hold a heavy device in the hands.

Post has been editedmainbord - 07.04.13, 23:15

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