Yes, being on T-Mobile US I've experienced the same thing, Rene. I've been next to AT&T friends where they had no signal and mine has been great. But, I'm sure it's happened the other way around, too. (Although I have to honestly say it's more the former rather than the later.) And, when I was in Montreal & Quebec over the holidays it was nice to roam between Rogers and Telus. I hope tomorrow is a step forward towards letting iPhone users choose the best carrier for their particular situation.hopefull copy iPod to itunes can solve itI've had the beta (and now the GM) on my device for the past 5 weeks or so, and my App Store update page is the same ol' thing its always been. Any suggestions? And yes I'm a developer so that shouldn't be an issue.