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Device guides for

Apple iPhone 4 (iOS4)

Most searched guides

Choosing a network for my mobile phoneUsing the music player on my mobile phoneDiverting calls to my voicemailTurning data roaming on my mobile phone on or off

Changing the phone lock code for my mobile phone

Want to change the phone lock code for your mobile phone? It's easy, but first you need to turn on the phone lock code before you can change the phone lock code.