(adsbygoogle = window.adsbygoogle || []).push({}); If I get an unlocked 3gs iphone can I use it on tmobile? Will I get 3g service?

yes and yes

Yes unlocked iPhone's work with any carrier, and yes you get 3G service you get everything that the provider give you like Data, Messages, everything.

That is a guaranteed yes. t-mobile has an entire team dedicated to helping people use their iphone on their network. My aunt works at their headquarters and run's marketing. :fyea: