1. Open the setting interface with Apple mobile phone. If there are many apps on the mobile phone desktop and you can't find the settings icon at the moment, you can use the application search bar to search for settings.

2. Find the General column in the navigation bar of the set.

3. Enter the "General" interface and select "Auxiliary Functions"

4. Then click "Auxiliary Touch" in "Accessibility" to open and turn it on.

5. Then press the floating point that appears on the screen of the mobile phone until the detection is completed.