How to set the screen rotation of the phone?
When the screen is locked in the locked state, the middle of the icon will have a small lock. When you are finished, press Home to return.
Out of the interface, the left side of the box with an arrow in the middle of the circle is the screen rotation control.
The icon in the upper right corner of the control center is the switch that controls the rotation of the screen.
Open the screen and slide your finger up from the bottom of the screen to open the control center.
