I plan to buy an iphone (i'm in the UK) for my wife for Christmas. The man in the O2 shop said you can transfer an existing O2 contract to use for the iphone. He said you connect the new iphone to itunes, enter the relevant details and "in a couple of days" the old simcard stops working and the iphone springs into life. 1. Is this correct? My wife has an existing O2 contract and I would like to transfer it to the iphone I'm going to buy for her. 2. In practice how long have people found it takes between registering and the iphone working? I would like to secretly transfer her contract, so the iphone works on Chrismas day, but if her current phone stops working to early she will phone O2 to find out what's going on ... 3. What functionality (if any) will the iphone have after registering but before the transfer happens ? 4. What info will I need to do the transfer? After a quick search I can't find her paperwork and I doubt O2 can give me the info as it's my wife's contract.