iPhone Screen Rotation Lock

If you want to lock iPhone or iPad rotation screen system. Because sometime that make you unhandy to see e-book, website or youtube. You just call up iPod by double pressed the Home Button, which is the middle button below the screen to bring up the multitasking bar and touch iPhone screen to the far right.

You will see the iPod app. This is the way you want to listen music immediately from you iPhone. In the left you will see the rotation icon. Press it, if you want to lock iPhone or iPad rotation screen system. That will show the locked key icon and press again to unlock.