November 23, 2012, 2:31 PM — Here's how you can lock your screen's rotation in Android Jelly Bean.
1. Open the Notification Shade.
2. Tap on the Rotation Lock.
3. Your screen will lock in its current orientation.
4. Tap the Rotation Lock icon again to release it.
For more, see the original article at the link below.
50 Android Jelly Bean tips, tricks and hints | Tech Radar