Instructions to turn off iOS update notifications
when there is information about the new ios operating system, your device will receive a notification about the information as well as a request to update the operating system.6 simple ways to speed up iOS 10 on old iPhones
ios 10 version has been officially released by apple, with many exciting new features. however, if using the old iphone as iphone 5s, 5 old lock, ... then updating to ios 10