How to turn off the three icons of SMS editing at the bottom of Apple's mobile phone during a call?

This is a bug in Apple's mobile phone. First enter the phone settings interface. Locate General and click Open. Find "accessibility" in GM. Find the "switch control" option in the auxiliary function and turn off the "switch control". If you still can't remove the small box after closing, you can restart the phone.

Click Settings, General and Accessibility to turn off Switching Control.

The main interface finds the setting icon of the mobile phone. Then click the "Settings" interface. Then select the notification center. Drop down, find SMS, and click Set Notification. Just open the display preview below.