The TestM diagnostic mode offers 26 tests, which range from testing the cameras, touchscreen, microphone, and even the haptic engine, to a comprehensive stress test that pushes ...
Got a problem with your iPhone? Maybe an app isn't working right, or perhaps it's locking up or not charging properly. Here are some general troubleshooting tips that might save you a trip to the Apple store.
If you are having problems with one Bluetooth device then a quick and simple thing you can try to fix it is to unpair it and then pair it again.
To unpair a Bluetooth device head over to Settings > Bluetooth, find the troublesome device and click on the i next to it and then tap Forget This Device.
Caption by: Adrian Kingsley-Hughes
Join Discussion