iPhone 7 freezes
My iPhone 7 freezes all the time, for example when I am listening music and then I open some app and it just freezes. Home button or lock button does not response but the music keeps playing. This issue happens me over 10 times per day. I have restarted my iPhone (pressing lower volume button and power button at the same time) and it did not work. I have also cleared my entire phone and that did not work neither. This is very annoying, can somebody help?
iOS 11.1