How to open the floating window on Apple mobile phone?

First, how to set the "point on the screen" on Apple's mobile phone:

1, Settings-General-Accessibility-Auxiliary Touch-Turn on "Auxiliary Touch".

2. Change the icon: Settings-General-Accessibility-Accessory Touch-Open Accessory Touch-Customize the top menu-Plus sign-Select icon-Finish.

Second, Apple mobile phone "dot on the screen" icon function:

1. Click the "Home Screen" icon: instead of clicking the Home button.

2. Double-click the "Home Screen" icon: You can open the multitasking interface and slide up to close the background application without double-clicking the Home button.

3. Click the "Multi-tasking" icon: You can open the multi-tasking interface and slide up to close the background application without double-clicking the Home button.

4. Click the "lock screen" icon: you can lock the screen without pressing the power off button.

5. Press and hold the "lock screen" icon: No longer press and hold the power off button, the "slide to power off" interface will pop up.

6. Click the Mute icon: You can set the mute instead of pressing the mute button.

7. Click the "screen capture" icon: instead of "press the power button and the Home button at the same time" to capture the screen.

8. Press the "Volume Up" and "Volume Down" icons instead of the volume buttons.