One of the first really cool things most new iPhone and iPod touch owners discover is that if they turn their device on its side, the screen automatically rotates to match the orientation of the device. That is, if you turn your iPhone on its side, in most apps, the screen will rotate to display lengthwise rather than heightwise.
Sometimes, though, when you turn your iPhone or iPod touch, the screen doesn't move. In most cases, that's because you've got the screen rotation lock turned on.
As its name indicates, this setting prevents your iPhone or iPod touch from rotating its screen no matter how you turn the device. To confirm that screen rotation lock is turned on, look in the top right corner of the screen, next to the battery meter, for an icon that looks like a curved arrow surrounding a lock. If you see that, screen rotation lock is turned on.
To turn it on or off, do the following:
- From any app, double tap the home button on the front of the iPhone or iPod touch. This will reveal the fast app switcher row of apps at the bottom of the screen
- Swipe to the right to reveal the iPod/Music app, music player controls, and on the far left, an app with a curved arrow in it (if the lock is turned on, you'll see the lock inside the arrow)
- To turn screen rotation lock on, tap the curved arrow icon so that the lock appears
- To turn screen rotation lock off, tap the icon so that the lock disappears
- When you're done, single tap the home button and you'll be returned to normal operation of your device.
Apps That Can't Rotate
While many apps can rotate to either portrait (straight up and down) or landscape (sideways) mode, not all of them can. The home screen on the iPhone and iPod touch can't rotate (though it can on the iPad) and some apps are designed to only work in one orientation. If you turn your device and the screen doesn't rotate, check to see whether the screen orientation lock is present in the top corner. If it's not, the app is probably designed not to rotate.
iPad Screen Rotation Lock
While the iPad runs the same operating system--the iOS--as the iPhone and iPod touch, its screen rotation works a little differently. For one, its home screen can rotate. For another, the screen orientation lock is controlled a bit differently.
In the Settings app --> General, there's a setting called Use Side Switch to: which lets you choose whether the small switch on the right side of the iPad above the volume buttons is the mute button or the screen rotation lock. If you set Use Side Switch to: Lock Rotation, then that button is the only way to lock and unlock the screen. However, if you set that to be the Mute button, use the steps described above for the iPhone/iPod touch to access the screen rotation lock.
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