I bought a used s 4 and I just noticed it has signal issue. It shows the signals but when I try to make a call it drops all of the signals and call gets disconnected. I can't even receive a call. Please advice.
Thank you so much
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To open the phone and make sure if it have the signal cable or if the signal cable is broken.
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Open your phone and unscrew(12 screws total)/GENTLY pry off your midframe. On the right side of your battery housing there is a Long blue Wire with a connector on each end. (This is your antenna) Carefully make sure they are securely fitted on the motherboard and daughter board. (Top and bottom computer boards)
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