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iPhone 6S Plus touch function not working? Get solution here!

Yesterday, we received an iPhone 6S plus, which problem is iPhone 6S plus touch function not working. Don't worry, you can get solution here!


Disassemble the iPhone, observe the  iPhone 6SP motherboard, we found it's slightly flooded, but there's no obvious corrosion and no obvious distortion, the motherboard is good. 

After checking,  now we need to measure resistance value first with multimeter. After measuring, we found the J4200-22 pin has no resistance value, that is why the iPhone 6S plus touch function doesn't work.  We can check it on WUXINJI circuit diagram.

After removing glue on the main board, it is found that FL4215 falls off, we can check it under the microscope, as shown in picture 2.


How to solve the fault? just directly short connect FL4251, the resistance value is tested normal.

Finally, assemble the iPhone with JM-9102 Disassemble Tools, then test it, now the iPhone 6S plus touch function works again.


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