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Wirenut

macrumors regular
Original poster
Nov 6, 2016
198
94
This is really odd. All of a sudden my left thumb won't open my iPhone 6S, but my right thumb works perfectly.

When I setup TouchID, I only used 1 finger profile. I used my right thumb for most of the setup presses but used my left thumb for the last few. I did this a long time ago when TouchID was slow if you put too many finger profiles in. It has worked flawlessly since.

I have no changes in my finger, no cuts or anything.

What suddenly changed??
 
No idea. Just delete the left thumb from your TouchID and reregister it.
 
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