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How does Apple 1 1 flash open incoming calls and text messages?

Apple's mobile phone flash reminder method is as follows:

Preparation materials: Apple mobile phone

1. Click the 1 mark in the "Settings" diagram of the mobile phone desktop to enter the mobile phone settings.

2. Click "General" to enter the "General" setting interface.

3. Click "Accessibility" to enter the "Accessibility" setting interface.

4. Turn on the "information flash".

5. Click "LED flashing reminder". If the display is turned off, click Check to turn it on.