Firstly thank you if your reading this message,I've been going crazy trying to find help. Well my phone is a nokia 6101 and I can only use vodafone sim's and I want to change to optus and I'd really prefer it if i don't have to pay money to unlock it. From what iv'e been reading there is a number you need from the phone as every one has a diffrent un-locking code and i presume that this is the number is 358360/00/590069/7. If I'm wrong I'm really sorry but can you please help me. Jacqueline.b