While iPhone X has been out of warranty, we have received more and more iPhone X. Today, we will talk about how to fix iPhone X 4013 errors after water damaged.
The first step we need to do is to restore the data, then we boot it normally, but we found there reports an unknown error 4013, same with the file description.
So we have to quit it and use the professional tools to disassemble the iPhone, and connect it to DC power supply to check the iPhone current. The iPhone X can enter the IOS system when the iPhone screen isn't connected, and the iPhone can be turned on smoothly when the front receiver flex cable isn't connected.
Observe the iPhone display screen under the Stereo Zoom Microscope, we found the iPhone receiver has the trace of the water.
Remove the front receiver sensor flex cable, we found the photosensitive lens also has the traces of corrosion. Use QUICK 861DW rework station to separate the light sensor, the solder pad has been corroded.
Handling the corroded solder pad, apply the tin, and use green UV oil to cover the area where the copper is leaking, and then install the light sensor back to the solder pad.
Assemble the iPhone and test it, the iPhone is turned on successfully, and it can enter the IOS system properly, the functions tested are normal, the light sensor is normal, the Face ID is normal.
Summary: this failure is caused by the short circuit of the corroded iPhone X front receiver light sensor, and then caused iTunes unknown 4013.
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