Ringer turns on and off on it's own
When I was at school, I pulled out my phone and a few times the ringer would turn off on it's own, and I usually keep it off.
It was in the middle of class and it did it a couple of times. How do I make it stop? And I need to keep it off during school hours because I can't have it ringing in the middle of class.
Is this a good question?