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Device guides for

Apple iPhone 3GS

Most searched guides

Turning data roaming on my mobile phone on or offCancelling all diverts on my mobile phoneUsing tethering on my mobile phoneTurning use of phone lock code on my mobile phone on or off

Inserting a SIM into my mobile phone

Before you start using your mobile phone, you need to insert your SIM. Make sure your mobile phone is turned off before you insert your SIM.