Solution: iPhone 6P receiver and light sensor not working during calls

When we answered the call on iPhone 6 Plus, there is no sound from receiver, and the light sensor is not working during the calls.  What's trouble? Usually, the receiver, the iPhone tail plug cable and the iPhone audio IC all will cause this problem, here is the solution to fix it.

Frist, disassemble the iPhone 6 Plus by phone opening tools, remove the iPhone display assembly.

 
Replace the new iPhone receiver. Use tweezers to remove the receiver, and then install the new one. 

Install the iPhone and test it, the problem still the same.

Disassemble the iPhone, carefully take out the iPhone motherboard. 

Replace the iPhone tail plug flex cable, and then install the new iPhone tail plug cable.

Install the iPhone and test it, the problem still the same.

Now,we need to check iPhone audio IC.

Remove the iPhone motherboard, put it under the microscope to check iPhone audio IC
U090. 

Use QUICK 861DW hot air rework station to remove the iPhone audio IC, and then install the new iPhone audio IC to the motherboard.  

 

Install the iPhone, and test it again, now the problem has been solved, all functions works perfectly.