iPhone 8 Plus — mic2: Power button

Low confidenceVerified sourceMissing sensor

On the iPhone 8 Plus, mic2 means: Power button / flash flex (rear microphone).

What does this code mean?

Watchdog panic: thermalmonitord no longer receives a response from the rear microphone mic2, carried by the power button / flash flex; with no response for ~3 minutes, iOS restarts the iPhone. No mic2 case found on iPhone 7, 8 or X.

Which part to test first?

Check the seating of the power / flash flex, test with a known-good flex, inspect its connector on the board.

The same code on other models

Field cases

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Sources