My son has just bought a nearly new 8Gb 3G iPhone off a friend. All legit - nothing dodgy. Honest. Its still locked to O2 as originally supplied and he wants to keep it that way. Now he has to find the cheapest way of using all its functions including web browsing and email. He was told about these................ http://cgi.ebay.co.uk/O2-3G-Sim-PAYG-iPhone-10-Credit-1-year-Unltd-Internet_W0QQitemZ130277673649QQcmdZViewItemQQptZUK_Mobile_Home_Phones_Sim_Cards_CV?hash=item130277673649&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1308 Does anybody have any experience of using one of these? Using one of these on a PAYG basis seems to be alot cheaper than taking out a contract with O2. Comments and suggestions please................ Thank you in advance.