How to set the floating menu app to adjust the brightness of the mobile phone?

1, open the phone to enter the main page, and select Settings.

2. After entering the settings page, select General.

3. After entering the page, click the auxiliary function.

4. After entering the page, select AssistiveTouch.

5. Select Open.

6. When you return to the homepage, you can see a small white dot. Click on the small white dot.

7. You can drag the position where the white dot is displayed in the interface at will. Clicking on the white dot will pop up settings such as home screen, control center, devices and personal favorites.