In the process of using the iPhone, there will always be some system problems, some simple system failures, we can try to solve them by ourselves.
Just like a computer, we all choose to shut down to solve the problem when it gets stuck, crashes, or clicks on the screen to solve the problem. The same is true for the iPhone. You can force the iPhone to try to solve the problem.
Before iPhone 7 series
Press and hold the Home button and Lock screen button at the same time until the Apple logo appears.
iPhone 7 series, iPhone 7Plus series
Press and hold the top (or side) button and the volume down button at the same time until the Apple logo appears.
After the iPhone 7 series
Press volume up, volume down, and then press and hold the lock screen button until the Apple logo appears
If the forced restart doesn’t work, you need to use tools to repair the system problems. If you don’t want to delete the data on the phone, you can try to use the standard mode in Okayfone Apple Repair Master, which can repair simple system failures.
If the standard mode can’t fix the system failure, it may really need to delete the mobile phone data to solve the problem. We can continue to choose tools to solve the problem and choose the advanced mode. In addition, we can also choose iTunes. After connecting to the computer, Click to restore iPhone functions
