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원문 게시자: Thaddeus Lee ,


This may take some time but I would disassemble what you have repaired and check the antenna ports to make sure you did not accidentally damage the port on the logic board. I have done it and it still works but not every one is lucky .  iFixit suggests cleaning the grounding locations as finger oils can prevent the grounding and thus you would have this issue. If you are doing this for a water damage phone make sure there are no signs of corrosion on the Logic board or the case where.