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How does Apple set qq to send messages, and then the flash lights up?

The specific steps are as follows:

1, open the settings.

2. Open for use.

3. Open the auxiliary function.

4. Turn on the LED flashing indicator reminder switch.

5. Apple's mobile phone LED flashing means that it can bring more convenient reminders after turning on the reminder switch.

Extended data

At present, the back of Apple's mobile phone is equipped with a high-definition camera and an LED flash for taking pictures at night. Of course, this LED flash can not only help us to take pictures at night, but also serve as a flash reminder when making phone calls or texting. Incoming call flashing can remind us that there is an incoming call, which is also a very dazzling function.