How to set the emergency alarm bell of Apple mobile phone?

First, wake up our mobile phone, enter our mobile phone desktop and find "Settings" on our mobile phone desktop. Click to enter the settings.

2.

Click to enter the settings, and we will come to the settings interface. Look down in the setting interface and find the option of "sound". Click enter.

3.

After clicking the sound option, the interface will automatically jump to the sound interface. On the sound interface, we will find the "phone ringing" option again. Click the ringtone option to enter.