There is a system failure on iPhone, how to solve it? Master a few methods and you can solve system failures yourself.
force restart
When an iOS system failure occurs on an iPhone, the first thing you need to learn is to force restart it. Just like when a computer freezes and becomes unresponsive, it is also a good idea to shut it down! Here's how to force restart your iPhone:
iPhone 6 and earlier models:
Press the Home button and the Power button at the same time without releasing them.
When the Apple logo appears on the screen, release the buttons. After the Apple logo disappears, the iPhone will enter the system.
iPhone 7 and iPhone 7Plus models:
Press the volume- and power keys simultaneously.
When the Apple logo appears on the screen, release the buttons and the forced restart will be successful.
iPhone 8 and later models:
Press the Volume + key and release it, then press the Volume - key and release it.
Press and hold the power button and release the power button when the Apple logo appears on the screen, and the iPhone will be forced to restart successfully.
iTunes
If force restarting does not work, iTunes also provides an official tool to repair iOS. Connect the iPhone to the computer, open iTunes, and select Restore iPhone.
iOS repair tools
Restoring the iPhone with the iTunes tool will cause the data on the phone to be erased. We can also use the iOS repair tool to repair the iPhone first. In the standard mode of Okafeng Apple Repair Master, repairing iPhone system problems will not delete the phone data.
It should be noted that only standard mode will not delete mobile phone data, advanced mode and iTunes will also delete mobile phone data.