| 1) In most of the cases it is the antenna connector ( best way to check is to solder a copper wire and then check, if working fine 100% antenna connector)
2) The second test can be done with a fancy sticker which lights up when we make or receive a call. If it is not lighting up then it could be a PA or antenna switch problem.
3) If not then it is the RF processor.
But make sure you are not using high temperature while soldering these components and don't **** heat over them . Jus place them and **** heat around them . Cause many of them get damaged while fixing itself , this I found out through experience. |