Can You Replace Touch Id Home Button. The fact is that about 80 of iPhone Touch ID failures are caused by damaged home button flex. If your iPhone 7 home button breaks or needs to be replaced it will only work if it is recalibrated at an official Apple store.
If you dont have AppleCare or arent under warranty the repair will cost 319 for an iPhone 7 and 349 for an iPhone 7 Plus. From here you can delete a fingerprint then follow the instructions to add a new fingerprint. 2Go to settings Touch ID passcode enter your passcode the fingerprint is grayed out.
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Touch ID on an iPhone 7 cannot be fixed once and for all because theres some kind of one-to-one binding between the device and the Touch ID. For iPhone 6 and later versions touch ID is bonded with CPU and the user who has replaced his home button will then lose its touch ID fingerprint function. If your iPhone 7 home button breaks or needs to be replaced it will only work if it is recalibrated at an official Apple store. 2Go to settings Touch ID passcode enter your passcode the fingerprint is grayed out.