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.

Change device

Search in Apple iPhone 4

How to

Turning my mobile phone on and off

Follow these easy instructions to turn your mobile phone on and off. Remember you need to insert your SIM into your mobile phone before you turn it on.

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

The PIN is used to protect your SIM from unauthorised use. See how you change your PIN.
If you enter an incorrect PIN three times in a row, your SIM will be blocked.

Drag the arrow right.

The PIN is used to protect your SIM from unauthorised use. See how you change your PIN.
If you enter an incorrect PIN three times in a row, your SIM will be blocked.

If required, tap Unlock.

The PIN is used to protect your SIM from unauthorised use. See how you change your PIN.
If you enter an incorrect PIN three times in a row, your SIM will be blocked.

If required, key in your PIN and tap OK.

The PIN is used to protect your SIM from unauthorised use. See how you change your PIN.
If you enter an incorrect PIN three times in a row, your SIM will be blocked.

If your SIM is rejected:
Contact your mobile phone store or your service provider.

Tap and hold On/Off.

Drag the arrow right to turn off your mobile phone.

Email this guide

Would you like information for your {device-name}?

Yes No

Would you like

Information for one of these devices?

{device-name}

No thanks