Modems & Communications Lenovo P780 | [Problem] discussion of communication problems and the choice of modems
Communication P780
TESTING (ete / Do) Do you have problems with communication:
Yes [ 1414 ] ** [73,88%]
Not [ 474 ] ** [24,76%]
Which version of the device you have:
Euro 4 GB [ 189 ] ** [9,87%]
EUR 8 GB [ 414 ] ** [21,63%]
China 2013. [ 664 ] ** [34,69%]
China 2014. [ 621 ] ** [32,45%]
Did you change your modem or firmware:
China 2014. - Not [ 218 ] ** [11,39%]
China 2013. - Yes [ 379 ] ** [19,8%]
Euro 4 GB - No [ 44 ] ** [2,3%]
China 2013. - Not [ 162 ] ** [8,46%]
Euro 4 GB - Yes [ 42 ] ** [2,19%]
I have not tried or do not know how or did not work [ 521 ] ** [27,22%]
EUR 8 GB - Yes [ 133 ] ** [6,95%]
China 2014. - Yes [ 253 ] ** [13,22%]
EUR 8 GB - No [ 134 ] ** [7%]
Did you warm up the board:
EUR 8 GB - Yes [ 45 ] ** [2,35%]
China 2014. - Yes [ 54 ] ** [2,82%]
EUR 8 GB - No [ 48 ] ** [2,51%]
China 2014. - Not [ 56 ] ** [2,93%]
Euro 4 GB - Yes [ 14 ] ** [0,73%]
Phone died after heating [ 51 ] ** [2,66%]
China 2013. - Yes [ 36 ] ** [1,88%]
I have not tried or do not know how [ 1526 ] ** [79,73%]
Euro 4 GB - No [ 25 ] ** [1,31%]
China 2013. - Not [ 57 ] ** [2,98%]
There were problems with the IMEI after manipulation with a modem:
Yes [ 306 ] ** [15,99%]
Not [ 1579 ] ** [82,5%]
GSM900 frequency able to open on the Chinese version using Maui Meta:
China 2014. - Not [ 83 ] ** [4,34%]
China 2014. - Yes [ 115 ] ** [6,01%]
I have not tried or do not know how [ 1434 ] ** [74,92%]
China 2013. - Not [ 56 ] ** [2,93%]
Did not work out [ 95 ] ** [4,96%]
China 2013. - Yes [ 101 ] ** [5,28%]
Total votes: 1914
 



Rep: (334)
Modems and communication Lenovo P780
Description | Discussion пїЅ | FAQ | Purchase пїЅ | Marriage пїЅ | Firmware пїЅ | Firmware Vibe1.5 пїЅ | Modems and communication пїЅ

Differences between European and Chinese versions
The European version is sold officially in Russia in the salons (Euroset, Megafon, etc.). The Chinese, too, are on sale, but does not have the certification in Russia and sold all kinds of online shops and stores such as Ebay and Aliexpress orders from China.
Instructions and drivers
Modems
Modems to version Android 4.2 and 4.4 are different file name (modem_1_3g_n.img to 4.4 and 4.2 for modem.img). To install the modem, select the correct version for rekaveri.

Modems for Android 4.2 Modems for Android 4.4 Reviews
Problem solving

Repair IMEI Communication problems

Based uponLiteracy classes from DanCom. Recommended reading


Post has been editedRamsteiner - 10.01.19, 23:06



Rep: (20)
* Gimmor thanks, remembered for 4.4 firmware file must be named modem_1_3g_n.img, it would be nice to improve instruction Lenovo P780 - Firmware (OS 4.2)

Post has been editednewphonebass - 06.01.19, 20:00



Rep: (468)
newphonebass @ 06.01.19, 17:52*
for CN firmware file must be named modem_1_3g_n.img

Again, not so!
Different file names to 4.2 and 4.4 Android versions. Sami Modems are absolutely the same.



Rep: (20)
* Gimmor understand, thank you, I had a file for the 4.2. In any case, the instructions to correct not hurt.

Post has been editednewphonebass - 06.01.19, 19:59



Rep: (8)
Hello everyone. I was forced to get off the shelf gathering dust their 780 th (Chinese, 4gb), put the sim card, the network does not catch, changed a couple of modems, especially not brought results. Previously, network problems do not remember. In Mobile Uncle Tools line is missing GSM900, but just her kind of work the operator. So it should be in the Chinese version or I because the firmware of the curve does not have this frequency?



Rep: (8)
dabustard @ 21.01.19, 18:20*
Hello everyone. I was forced to get off the shelf gathering dust their 780 th (Chinese, 4gb), put the sim card, the network does not catch, changed a couple of modems, especially not brought results. Previously, network problems do not remember. In Mobile Uncle Tools line is missing GSM900, but just her kind of work the operator. So it should be in the Chinese version or I because the firmware of the curve does not have this frequency?


EGSM900 line there are included, and the same is GSM900?
In general the situation is, if you select settings only, or WCDMA auto, the network and the Internet work, and if you select only the GSM - it does not find any network. The situation is similar with different SIM cards. Who can tell what might be the problem? Firmware VIBEROM_by_Captainnemo_V1.0_1407_2_ST_P780, Android 4.2.2, modem V23, on the other catches and WCDMA



Rep: (468)
dabustard @ 22.01.19, 11:52*
what could be the problem?

I then himselfgathered modem. Try it.



Rep: (0)
People found this topic Lenovo p780 Sims net.Lezhal polgoda.Nikto prishel.V eventually decided not to charge vklyuchil.Batareya not native, there is no imei + firmware module svzya Invalid.Model assembly Lenovo p780_ROW_8g_s228_150112 who will help?



Rep: (8)
dabustard @ 22.01.19, 10:52*
dabustard @ 21.01.19, 18:20*
Hello everyone. I was forced to get off the shelf gathering dust their 780 th (Chinese, 4gb), put the sim card, the network does not catch, changed a couple of modems, especially not brought results. Previously, network problems do not remember. In Mobile Uncle Tools line is missing GSM900, but just her kind of work the operator. So it should be in the Chinese version or I because the firmware of the curve does not have this frequency?

EGSM900 line there are included, and the same is GSM900?
In general the situation is, if you select settings only, or WCDMA auto, the network and the Internet work, and if you select only the GSM - it does not find any network. The situation is similar with different SIM cards. Who can tell what might be the problem? Firmware VIBEROM_by_Captainnemo_V1.0_1407_2_ST_P780, Android 4.2.2, modem V23, on the other catches and WCDMA


Having tried all the modems from China, from European versions and for different versions of Android - GSM900 and not earned. But the problem is still resolved by the installation of the modemV23for the European version and subsequent activation of GSM900instructionsfrom the cap.

I suspect that the problem appeared after replacing equipment operator as before (two years ago), there were no problems.



Rep: (0)
Firmware radio influences vayfay?



Rep: (468)
skrul77 @ 25.02.19, 18:43*
Firmware radio influences vayfay?

Of course!
See what files are included in the radio - everything will become clear ...
Files
Attached Image



Rep: (0)
thank



Rep: (0)
P780 8gb, European, Modem 4.4.2 v23. 3g stopped working at all, such as network and catches but not dozvonishsya, Internet impossible to get out. Surprisingly the problem by putting a piece of paper under the reshylas percent and contacts on the antenna slightly buckled. So far, everything is working for several days, 3g stable.

Posted on 04/07/2019, 12:56:

And yes, before the modem flash, it did not help!



Rep: (3)
Hello comrades. He came to his village (Change location) stopped to catch network both SIM cards (for Tele2 and Megafon).
The phone operator name defined normal, online time is picked up, IMEI in order, trying to urge the processor to change the firmware (native / custom) to change modems (including 23 andcustomfrom Comrade. Gimmor) - does not help. In Mobileuncle MTK Band Mode to enable / disable all that was available - there is no effect.

The signal level sometimes phone settings changes from 0 dBm / 99 ASU at -75 dBm / 19 ASU. (Cm. Screen)

Is it still something to try to do, or it's all the same blade of the processor, and the like?

UPD:
The problem was solved by replacing the modem. Apparently in the past times crooked set. Sorry for the trouble: 3

Attached images
Attached Image


Post has been editedLepur - 07.05.19, 19:43



Rep: (13)
about improving communications. in the cap there is a way to bumazhechki for the processor. I advise you to put the old sim card, ideally placed in the groove + copper and plastics conduct heat better than paper (not my way to find the vast). It helped. + I do not know if anyone tried it before me, I have done this on the Samsung. each phone has a diagnostic connector for GSM -

here insert entries, almost stripped to entered the connector.
quality is poor but visible. important to exclude its contacts nezaezalirovannoy part with a lid. I used tape), all at your own risk but the signal becomes full and stable even in the basements



Rep: (1)
XVSS @ 03/22/16, 23:24*
- Looks like you are not only a cap, but my answer read it diagonally :) In the header it is written how to enable GSM 900. But get 3G to 900 MHz (WCDMA 900) - it is impossible.

In the header it is written "Instructions3G 900 MHz. "It turns out the hat is misleading everyone. You need to change on 2G for a similar misleading error went through the forum hats to other branches ...


P.S. Here the film modem is different - because it cannot be turned on. And if the hardware stuffing is the same, no one knows how to include frequencies 3G (2100)?


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