iPhone 6 water damage can't be turned on, and the U1501 chip is found to be defective. After replacing one, the power-on current is normal for current of change, and Hang Logo(white apple)is displayed on the screen, and the board can be repaired.
iPhone 6 passed without sound, often no serviecs, but still no serviecs after replacing 2G power amplifier. Then, after checking that the mobile phone has an operator, according to the previous maintenance experience, we can receive the operator's explanation that the receiving signal part of the mobile phone is good, and the problem should lie in the transmitting part. Then, a large RF is replaced, and the signal is OK after replacing the large RF.
