after I restored my iphone6 from icloud, it becomes very very slow. it looks like the iOS is refreshing something on the background all the time and only the physical button can work correctly. all the touch screen can only react after 60 seconds or more.
What's the problem? I've already deleted as much APP as I can but it no help. is it because of iOS 9.3.2?
if I turn off all the internet connection, the situation will become much better.
