Received my N900 today and my 3UK contract SIM is “Rejected” as is a 3UK P.A.Y.G SIM, tested it with my work O2 SIM that works OK.
Apart from the 3UK SIM Issue I am pleased with the N900.
Microphone ok
Screen Perfect

I do hope this 3 SIM issue is corrected quickly as it is very annoying not being able to use it as a phone or use the web using the cellular network!

Paul.