Apple, where’s your quality management?
Here is what you can do yourself to fix a problem with an iOS device. Try it out in that order.
If you can’t fix the problem with these procedures please contact the Apple Support, an Apple Store, or an authorized repair center. Note, you don’t have other options. Don’t trust in what you found on the Internet.
It cannot be excluded that it’s not your device but a bug in iOS that causes the problem. So please read what’s posted here about bugs or visit the
Apple Support Communities
Hopefully your brain isn’t buggy too.