Perhaps you may have forgotten to plug the antenna cables back in from the charging port to the logic board?
Also if some antenna contacts are broken on the logic board that connect to the plastic antennas that go over the logic board and are usually held down by screws that can be your issue too.
Perhaps you may have forgotten to plug the antenna cables back in from the charging port to the logic board?
Also if some antenna contacts are broken on the logic board that connect to the plastic antennas that go over the logic board and are usually held down by screws that can be your issue too.