The simplest and most effective remedy to fix this is to force restart your iPhone. For iPhone 7 & 7 Plus: Press and hold the volume down and power button until the Apple logo appears. On iPhone 6, 6s ...
Control Center was introduced in 2013 with iOS 7. At the time ... add whatever apps and functions you want to your Control Center. 1. Unlock your iPhone and swipe down from the top right corner ...