How to turn on the flash of Apple's mobile phone?

Apple light flashing is set in the auxiliary function, and the specific setting method is as follows:

1, open the settings first.

2. Find the accessibility features in the settings.

3. Find audio/video in accessibility.

4. After entering, the LED flashes.

Precautions:

1. When the LED flashes to indicate that it is on, the light will flash when an incoming call comes to send a short message.

2. Turning on this function will affect the battery life of the mobile phone.