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Kindly I have this issue with my Note 10 plus quite a while and trying to fix it, but sadly still did not find the solution.

After having N975F/DS for a year, when the phone goes to 3g network it loses the signal and gives a message no network connection. as a result, to receive calls and sms I need to stay in 2g only mode, and the data I use a wifi connection, but cannot use lte as if I got a call the phone will go to 3g, resulting unreachable message to the caller.

I started to search the internet for a solution and after a long search I have concluded that I need to flush the device. I have downloaded the latest version from "sammobile" and as the country that I live in does not exist I have used the closest country.

An hour ago I have finished flushing the rom of the device using odin and after getting back the phone to work, tried from auto mode (4g/3g/2g) mode to make a call, from 4g it went to 3g and the shock, same issue cannot connect to the 3g network.

I have tried the sim card in another phone and it worked smoothly with no issues, and as well I have tried another sim card from a normally working phone in this phone and the issue exists.

Kindly I need help.

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  • In which country are you and which mobile network do you use? In a lot of countries 3G services have already been shut down, in some even 2G services are no longer available.
    – Robert
    Commented Apr 2 at 15:21
  • In Jordan, still they provide the three layers: 2G, 3G and LTE
    – Samir
    Commented Apr 2 at 20:59
  • If 3G is still provided it could be a problem with the used frequencies. Each device only supports a limited number of frequency bands and your mobile network provider is only allowed to use a certain set of frequencies and these frequencies have to be split up between 2G/3G/4G. In case of bad luck your MNO provides 3G services on frequencies your phone doesn't support.
    – Robert
    Commented Apr 3 at 6:59
  • First of all, I thank you for your help. I cannot find a way to pull the supported frequencies that the phone has from the phone itself, the only way is from gsmarena. I have G-NetTrack Lite app installed on both phones: Note 10 plus and A3 (2017). In all scenarios that I do in A3 that forces frequency change, all of them is supported in Note 10+
    – Samir
    Commented Apr 3 at 12:03
  • Cannot handle ARFCN numbers: 10737 and 10762
    – Samir
    Commented Apr 3 at 15:32

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