Modems and communications Samsung Galaxy S7 | [problem] Solving communication problems



Rep: (61)
Modems and communicationSamsung Galaxy S7
PictureSM-G930F, SM-G930FD
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Important information
This topic is devoted to the problem, due to which the signal of cellular communication and the Internet is lost, and as a result, dialers and SMS about missed calls


When reporting errors, it is necessary to indicate:
1. The firmware on which the network dumps occur;
2. Regional affiliation of the telephone;
3. Where was the phone purchased?
4. Availability of root access;
5. The mobile operator.


Remember, the more people contact this problem in Samsung, the more likely they are to deal with it.
Samsung Members |Samsung Live Chat| Hot line8-800-555-55-55


Possible solutions
Modem firmware
The surest way to solve the problem is to flash another modem
Instructions for modem firmware

Modems
Android 8.0
Modems of the 3rd version (after their installationreturn to previous versions of modems is not possible): 3RHC 3RI1
2 version: 2ERD5 2ERD6 2ERE8 2EREM 2EREO 2ERG2 2ERGC


Android 7.0
Modems of the 2nd version (after their installationReturn to modem version 1 is not possible): 2DRA9 2DRAG 2DRAD 2DRAH 2DRAC 2DRAE 2DRA7 2DRB6 2DRAR 2DRC7
Modems of the 1st version:
DRA2, DRA4, DRA6, DRA7 | DRA5 | DQJ1 | DQK2 | DQL8 | DQIL | Dqig | DQH9 | Dqhy | DQG2, DQG3, DQGA, DQH6, DQHD | DQF5 | DQF3 | DQD8 | DQF1 / F2 / FD | DQEM | DQE8 | DQE3 | DQD7 | DQC8 | DQCH | DQCG | DQCE | DQCA | DQCG | ZPK1 | DQC2 | Dqbi | Dqbh | DQB3 | DQB1 | Dqak | DQA3

Android 6.0.1
BPL6 | BPJJ

Disable Wi-Fi Calls
If your mobile operator is MTS, then you can turn off Wi-Fi Calls
To disable Wi-Fi Calls:
  1. Lower the curtain and find the Wi-Fi Calls icon
  2. Long tap on it, go to the settings menu of this function
  3. Prioritize mobile networks

This method works only on the MTS operator.
On other operators, the Wi-Fi Calls icon will be semi-active, and you will NOT be able to go to the settings menu of this function
Reset
Also, it is advised to make a complete reset if you did not do it after switching to version 7 of the android, and the network loss appeared at that moment
You can do this as follows:Settings-General Settings-Reset-Reset Data

This method only helps units, but this procedure is advisable every time you change the version of Android

Survey Screenshots
Attached Image
Attached Image
Attached Image


There is no curator in the subject. For questions about filling caps, please contactDoniel in QMS or moderators section through a button Pictureunder the messages. How to do it right, what would you understand the first time, well describedhere.

Post has been editedDoniel - 20.10.18, 10:02
Reason for editing: New modems



Rep: (11)
Roma21515 @ 03.10.20, 23:52*
It is worth the modem version 3, Kyivstar Ukraine. It makes sense to flash to other beliefs 4,5,6,7,8 ??

Tell me how you are with a zhor battery in 4G mode?



Rep: (160)
Bambucha1203 @ 13.10.20, 20:34*
Tell me how you are with a zhor battery in 4G mode?

With intensive use with the navigator, there is enough for 8 hours and 4.5 hours of the screen, the battery is the native body 3.5 years, with not intensive use on WiFi, the day holds and 5 hours of screen, I do not play the game.



Rep: (0)
Recently came the phone from America G930p with the last loader B. decoded using T-unlock. Insert a card - everything seems fine, but does not work in 3G and 4G mode (LTE) - even the network does not see. Only in 2G mode works. I thought the case in the gland - postponed. Yesterday came G930T also with the last loader B. Made Unlock - and the same story. On 2G everything works, on 3G and 4G - even the network does not catch. Referent to the last firmware U is the same. Coincidence and problem in both phones in the hardware? - I do not think. Can someone come across such?



Rep: (0)
[Snapback] 77017354
MNKY @ 14.09.18, 16:55*
They write that the HardVarnas problem (Shannon's transceiver is faulty as it) and you need to look for a workshop that can turn it out without changing the motherboard.

[/ snapback]MNKY,
So what caused it since 3G? All the same in the transceiver case or software problem?


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