Need to sleep and felt like watching a late night movie on your iPhone 4 or 4s or you just want your phone to display in the landscape mode. Owners of earlier version of the iPhone could simply do this by setting a button to lock rotation under the General tab but 3rd generation and above owners have been denied this one click option. So we thought we should show you a simple way to lock or unlock rotation on iPhone 4 and above. Follow the steps below to do this.
1. Double click the home button to bring up the multitasking bar.
2. Swipe right until the last set of icons is displayed in the multitasking bar (these will include play/pause and skip buttons for iPod or Pandora).
3. The furthest left icon looks like a circular arrow – touch this icon to enable or disable rotation lock on the iPhone.
4. A rotation lock icon will appear in the status bar next to the battery charge icon when rotation lock is enabled. This looks like a circular arrow around a padlock.