iPhone 4 unlock

[Dan-Subtlem]

Hello,

Recently purchased an iPhone 4 from the company my sister works for, they had renewed their contract and was selling off the old phones relatively cheap.

My girlfriend wants to use the phone but is on 02 network and the phone is locked to Vodafone.

I have contacted Vodafone but they will not help as I'm not the owner of the phone and do not have the mobile number.

How can I go about unlocking the phone?

Thanks

[L33h]

If you jailbreak it then it will unlock it to all networks

[Scottp]

No it won't, jail breaking doesn't automatically open your network

Use this http://www.iclarified.com/unlock/index.php

[Dan-Subtlem]

Thanks Scott, will give that a go tomorrow.