What is the reason for the ringing of the incoming call after answering the phone, and how to solve it?

Under normal circumstances, the ringtone will automatically stop after the Apple phone answers the call. If it doesn't stop, there is something wrong with the mobile phone system. It is recommended that users directly restore factory settings or restore firmware through itunes, which can generally solve the problem.

Step 1: Enter the settings of iPhone first, and then enter the general settings.

Step 2: After entering the iPhone General Settings, enter the Restore Settings, and click Enter to restore all the settings or erase all the contents and settings in the Restore Settings.

Enter the above iPhone to restore the factory settings, and you need to enter the unlock password to continue the operation.

Note: The option of restoring all settings will only erase all installed applications, address books and other information, but will not erase the data in ROM memory. However, if all the contents and settings are erased, all the data in the iPhone will be restored to the factory settings, and the data in the ROM memory will also be cleared. Therefore, before choosing iPhone to restore factory settings, please pay attention to backing up important mobile phone data in advance.