Device Guides

Apple iPhone 4S

iOS 9.0

iOS8

iOS5

iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

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How to

Restarting my mobile phone

Your mobile phone may not react due to overload or errors in the operating system. If this happens, it might help to restart your mobile phone.

Tap and hold On/Off and the Home key for about 10 seconds.
Your mobile phone is turned off and after a moment it's turned on again.

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