Originally Posted by troydbrown
UMA in the US is T-Mobile Only,amd I would guess it is specific.
Well, it is only with T-Mo at the moment, but, all carriers will follow suit. That still doesn't mean that you won't be pop in an AT&T SIM at the time AT&T has UMA, and the phone will just work -- or, is our particular 8320s coded only for T-Mo UMA? This is was the crux of my question in the first post.