Hi Just got a new iphone 3g today with a 02 payngo sim. I've updated the software to 2.2 and activated the phone on itunes. I have now swapped the sim to my company o2 sim with data access. All seems to be working ok so far (calls and internet), only issue I can see is if I load itunes web page it brings up my device but doesn't show the drop down arrow with the other sim in it (i.e. I can't use the itunes program to manage the phone). So questions are : 1) Should I expect any other problems with the company sim in the phone ? 2) Any great dis-advantages to not being able to use itunes program ? 3) Anyhting else worth knowing as I'm new to all this iphone stuff ? Any info much appreciated !!!