Android phone stuck in portrait or landscape mode when it shouldn't be? Here's what's probably going on, and how you can solve it.

If your Android's auto-rotate functionality is on, but the phone screen doesn't auto-rotate, it could indicate a minor glitch or hardware issue. In this case, your first step is to restart your phone.

For all the improvements Android has seen, Google still hasn't managed to make auto-rotation on Android work flawlessly, and it's surprising how inconsistent it can be.

Your Android device has an accelerometer that detects its orientation by measuring angular velocity and helps rotate your screen.

It's easy to forget about auto-rotate in everyday smartphone usage, but once it stops working, it can be an annoyance you'll want to remedy immediately.

QUICK ANSWER To rotate your screen on Android, open Quick Settings by dragging down the notification bar at the top. Tap the Auto-Rotate button to enable or disable automatic screen rotation.