Can I lock rotation with iphone?

Can I lock rotation with iphone?

IPhone 4 ships with iOS 4 and also has this capability. To enable rotation lock and prevent the screen from automatically changing orientation when the iPhone is turned:

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.

When rotation lock is enabled apps will not respond to the accelerometer sensor.

If you mean preventing it from changing from portrait to landscape when you shift your phone, then yes. If you mean something else, then I can't say for sure.

If you do mean the first one, here's how:
Double click the home button. This will pop open a list of your most recently opened apps. Put your finger on that list and scroll to the right. From the left side of the screen, a music menu will pop up. The far left button locks your phone on portrait orientation.

There might be ways to adjust other things regarding an iPhone's screen orientation, but I don't know anything about them.

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