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Solution For iPhone Face ID Not Working After Replacing I2C Dot Flex Cable

After using i2c v8 dot matrix flex cable to repair iPhone Face ID problem, the iPhone XS reports "Face ID has been disabled".  There is no natural light in the portrait mode, and it is tested with the Capture software to be a black screen. Generally, the iPhone Face ID will work properly after dot matrix flex cable replacement. Why this problem happaning? How to repair iPhone Face ID failure?


Note: now i2c dot flex cable is third generation version, called i2c v8i dot matrix flex cable, and the programmer is i2c v8i dot projector programmer. 

As we know, when useing hot air gun to remov the MOS tube during replacing iPhone Face ID flex cable, the high temperature may cause the black encryption IC to short-circuit the tin burst, and caused iPhone Face ID doesn't work.




Solution:

This pin is 3.3V. If this pin is short-circuited, the Face ID assembly component will not work. Therefore, we can cut off the 3.3V pin directly, or cover it with green oil.

- Use green oil to cover this pin. 


- Cut off this pin directly with a cutting knife.


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