How To Lock Screen Orientation in ISO 5

There are many features in ISO 5 but the auto rotation effects on screen is very nice but some time I hate this auto screen rotations effects because when I lay on my bed and browsing web and checking my text sms it rotates automatically.then i disable my screen rotations now i tell you some steps through which you can easily disable your  screen rotations:

1. You can simply tap the Home button twice to bring the multitasking dock.

2. Swipe your finger to the right until you see the music control buttons.

3. Then just tap on the lock button. After you enable the screen lock, the auto rotation is disabled and your screen is locked.

4.To re-enable the auto rotation, you can simply go through the steps again to turn off the lock.