Solutions for iPhone 6 Charging Problem

Fault description: iPhone 6 not charging problem

After we got it,  we tries to confirm whether the fault is true, we found there no charge symbol when charging.

Put iPhone 6 motherboard under a microscope and then observe it, it is good board, the iPhone tail plug flex cable is good, and the resistance value measured by Fluke 15B+ Digital Multimeter also is no problem.

Picture 1

Because we didn't find the problem after measuring, and according to our experience, we think the iPhone U2 IC might be damaged. Use QUICK 861DW hot air rework station to remove the iPhone U2 IC, and then replace it with the new one.

After replace the U2 IC, measure the resistance value again, the data is normal. So we test the iPhone charge function, the fault still there.

Now remove the iPhone charge tube, and then measure the resistance value, we found the G3 pin is no resistance value.

Check iPhone schematic diagram in the WUXINJI Dongle, we know that the G3 pin is I2c 1 bus, the G3 pin is disconnected, so the iPhone charge tube not working, no resistance value means disconnection. We can fix it by welding the jump wire.

Picture 2

Closest to the iPhone charge tube is the vibrating tube, we weld the jumper wire between them, and then install the iPhone to test, now the problem has been solved.

Another words,  if you found there happens IC problems, you need to measure the resistance value for the pins, then follow the correct procedure, find the faults, get it and solve it.