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Hi, I would much appreciate if someone could help me with this one. I do housing replacements for a long time now. I this time haven’t tested the phone carefully before I made a replacement. It catches signal for 5 mins, then it suddenly starts showing no service for 4-5 secs, then the signal comes back on. I replaced the charging port flex with a new one, then replaced the tiny ribbon that goes from the motherboard to the camera (at the top right), then cleaned with 99.9% Isopropanol the antenna bracket, checked the screws lengths on that side, on the top left corner, performed a restore and the problem is still there, goes to no signal every 5 mins. What else I can do? I belive this is the hardware level problem, where the components that may cause the no signal issue? The motherboard looks undamaged. Please help. Many thanks.
There is an Antenna Wire on the new Charging flex cable - Make sure this is connected -
