Why my phone has weak gsm signal?I followed the guide to change display with frame. Now I notice that my phone has problems to receive gsm signal, above all w...
回答先: Why my phone has weak gsm signal?thanks for answer. i tried to put some conductive pads, but signal is still weak. If I stay indoor far from window, phone can’t transfer datas by 3g/4g even if signal indicator is good. I see that indoor phone is not able to work by 4g. If I stay outdoor, phone works perfectly (also by 4g). It seems that antenna doesn’t have enough power. I noticed also that the weight of 10kg falled nera sim holder on the display where maybe there is gsm module of mainboard.