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Released September 16, 2016. Model 1660, 1778 Available as GSM or CDMA / 32, 128 or 256 GB / Rose gold, gold, silver, black, and jet black.

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iPhone 7 Power button not working, all other buttons work fine.


I have a iPhone 7 which I want to get out for sales but currently the power button isn’t working. I have replaced the side button flex cable twice now and still having the same problem (Yes i made the whole effort to simply swap them out completely without testing because i thought they would work for sure. stupid, but that’s what i did.) So now i actually decided to just plug another new flex cable in and use a small tool to press the button to see if the phone starts, and it does not start.

I dont think 3 of my flex cables would have the exact same problem including the 4th one that was already in the phone when i got it.

So to my question, is there anything else that can cause this problem? is the PCB broken somewhere? the phone boots perfectly fine when i plug a charger in and everything except the power button is working fine. I also feel like it’s weird that the other side buttons work but the power button is the only exception.

Note: I have updated the phone to the most recent IOS update and made a factory reset. didn’t really thought it would make a difference but still gave it a shot with of course no success.

Answered! View the answer I have this problem too

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This is the circuit for the power button. Normally, when you press the physical button, it shorts this input to ground.

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You can see where it goes to the connector in this snippet.

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You’ll want to verify is those components are still present on the logic board, or see if the connector is damaged. You can also try shorting the BUTTON_POWER_KEY line to ground with some sharp tweezers as that would simulate a button push.

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