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Оригинальный сообщение: Andrea Bettini ,


I solved this problem on my S8  Plus.

After changing the screen the network was  no longer working, then I tried to press the lower part of the phone  (near the home button) and the 4g network started working, I  disassembled the phone, on the second board(the smaller one) there are some pins, which touch the plastic shell, with tweezers I lifted them ( a little bit ?) to  make better electrical contact, I cleaned them with acetone and a piece  of paper.  then I reassembled the phone and it is now working perfectly! These pins touch some metal pieces in the plastic shell, to boost the antenna signal i tink.