My iPhone won't respond to pressing the power button to turn it off. It will shut it off on its own after no activity, as normal; and the power button works for turning on the phone. Is this a software issue?
iPhone SE
Hello,
If you have a case on your phone, remove it and try again. Also see:
Use the side, Home, and other buttons on your iPhone - Apple Support
And see this:
If your iPhone, iPad, or iPod touch won‘t turn on or is frozen
If no help, I guess that the Power button could be broken. Have it checked: Find Locations
Good luck.
iPhone SE (1st Gen) won't power off with power button
