Originally Posted by
nmaz I've been able to do this in the past without any problem. My WiFi is current not connected. I'm wondering if that's the problem?
I don't see why it wouldn't work over 3G. Anyway I ran into some issues with my credit card info when Apple changed their Terms of Use. For some reason my old credit card info was still in my account. I tried to make the changes on my device but it wouldn't let me, so I went to iTunes on my desktop and updated my info there and voilà!, problem solved. I haven't had any issues since.