Hi, absolutely brand new to blackberry, I've purchased a second hand curve 8520 and put my SIM card into it. I'm on vodafone. When I add contacts on Blackberry Messenger, the contacts stay as pending and the people I've added don't see an invite. Not sure if it's something to do with CBS or something like that, I've read countless articles on loads of things and it's all a bit confusing! Please help!