Please forgive my confusion, I have read lots of jailbreaking info but just get more and more confused! 

All I want to do is unlock my iPhone 4 (running 4.1) from the Tesco network and run it on Vodafone.
Is this currently (and for a beginner) possible?
Many thanks
All I want to do is unlock my iPhone 4 (running 4.1) from the Tesco network and run it on Vodafone.
Is this currently (and for a beginner) possible?
Many thanks