Hi, I have missed the 24th preorder date and I was wondering if by any chance even 1 in million manage to get on hold of a payg iphone 4 (uk) from a carrier like orange, 3 etc. Is there a difference having an officially unlocked iphone from apple vs an ultrasn0w etc. unlock device?? (other than any ethical/moral issues ). Any specific stuff that I will not be able to perform with such an unlock?, any downsides like slowdowns (if its a 24/7 background running service etc) ? I know that O2 official unlock iphones for $15, but I havent found any certain info on the other carriers. (note: the phone will not be used to UK at all, so some proposed actions from carriers like: use the phone for 3 months with the carrier and then ask for an unlock will not work in my case.) Thanks for your help.