Device Guides

Apple iPhone 4

iOS5

iOS4

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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Search in Apple iPhone 4

How to

Unblock SIM

Want to unblock your SIM? It's easy, but you'll need a PUK to unblock your SIM.

Tap and hold On/Off.

Drag the arrow right to turn off your mobile phone.

Tap and hold On/Off until your mobile phone is turned on.

The display tells you that your SIM is blocked.
Drag the arrow right.

Tap Unlock.

Key in your PUK and tap OK.

Key in a new four-digit PIN and tap OK.

Key in the new PIN again and tap OK.
Your mobile phone is ready for use.

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