Tap to toggle it on (blue/active) or off (gray/portrait lock). :
This feature uses your phone's internal sensors (accelerometer) to automatically switch the display between vertical (portrait) and horizontal (landscape) modes based on how you are holding the device. How to Use It : auto spin
Swipe down from the top of your screen to open the panel. Tap to toggle it on (blue/active) or off
Swipe down from the top-right corner to open the . auto spin