Why is there a small gray circle in the photo taken by Apple's mobile phone?

1. Open the phone, enter the main interface, and find the gear-shaped "Settings" icon to control all the function options in the phone. ;

2. Enter the setting options, and you can select the operator, network, call mode, etc. , the icon that controls the small circle is located in the General option. ;

3. After entering GM, this option is less, and the functions we usually use are relatively simple. Select Accessibility in the General option. ;

4. After entering the auxiliary function, we found the option to control the small circle on the desktop. The professional English term is "assistive touch", which translates to contact assistant. Click to enter. ;

5, after entering, you can choose to open or close, so that you can control the small circle according to your hobbies at different times.