Chosen Solution
Hello All I recently replaced the back, front screen and battery on my Iphone 5. it all works ok (which I was surprised at) but it says I have 4 bars of signal but when I call it says call failed. have tried doing network reset and DFU mode. does anyone know what the problem could be? Thanks in Advance
If I were you, I would start by ruling out potential SIM issue: Have you tried first a different SIM, or cleaning your SIM’s contact points with an eraser?
