Device Guides
Apple iPhone 4
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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
Copying contacts between my SIM and my mobile phone
If you change SIM or mobile phone, you can copy your contacts between your mobile phone and SIM, as it saves you from keying in all the information again.
Tap Settings.
Tap Mail, Contacts, Calendars.
Tap Import SIM Contacts.
You can't copy contacts from your mobile phone to your SIM.
Tap the Home key to return to standby mode.