slide to power off
is less than power reset
for solving problems
How to force restart
You should force restart your iPhone, iPad, or iPod touch as a last resort, and only if it's not responding. Follow these steps to force restart your device:
On an iPhone 7 or iPhone 7 Plus: Press and hold both the Sleep/Wake and Volume Down buttons for at least ten seconds, until you see the Apple logo.
On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo.
