The accessibility features on the iPhone are powerful and useful. Such an option allows you to turn on the camera's LED so it flashes when you receive a call or notification. This is especially helpful if you have hearing problems. Similarly, this feature is also useful if you do not want to miss a notification while your device is in silent mode or the ringer volume is set very low. In these situations, the LED indicator flashes to inform you of an incoming call or notification. Let's see how it turns on.
Enable the LED flash for alarms on the iPhone
Step 1. Start the app Settings on your iPhone.
Step 2. Scroll down and tap Accessibility .
Step 3. Now tap Audio / Visual .
Step 4. Under VISUAL enable the switch for LED flash for alerts .