depend on the service provider. As long as you don't tell which one you have, surely nobody can tell.
And it's a sad fact that access to all services via unlocked phones isn't really well supported by the providers in the USA. In most countries, it doesn't make any difference if the phone is locked or not and where you bought it. You pay for a subscription and you get everything that comes with it (provided your phone itself is compatible).
I currently have an unlocked cell. I want to be able to use it for everything but service providers usually dont want to help unless its there cell. How can i get the settings i need in order to use my cell for all functions. Its mainly gprs i can receive and sent text. i cannot however get pics etc. i know that i used to with old cell that broke but i cant with new one