[BlackDynamite]

So yeah, roaming on Sprint is basically for emergency use only. Any semi regular use on it will result in your account getting cancelled.

So roaming on Verizon may be a plus for T-Mobile over Sprint, it's certainly not a really big deal because you can't use it very much.

I'm almost positive T-Mobile can roam on AT&T too. At least for voice and possibly EDGE data. I know T-Mobile has roaming partners, so I would have to assume AT&T is the main one.