Windows Phone 8.1 - How to disable screen rotation
To disable automatic screen rotation on your Windows Phone 8.1 smartphone:
- From the Start Screen, flick left to display the App List.
- Scroll to Settings.
- Tap on Screen Rotation.
- Select your default screen orientation (landscape or portrait mode) by rotating your phone.
- Toggle the Auto rotate screen switch to Off.
- Your phone will be locked in the current position (landscape or portrait)