Can my at&t sims card work in a t-mobile phone?

Question

i want a sidekick...and i got at&t or cingular.

but i really wanna sidekick and the area i live at do not have t-mobile services.

so can my at&t sims card work in a sidekick? please help.

thxxx....

Answer 1

Yes, you can use an AT&T SIM card in a T-Mobile phone. It just has to be unlocked, as the first poster said.

Now, I do know that T-Mobile is the only carrier with the Sidekick data plan. I don't know if any of the data features will work for the Sidekick if using it on AT&T. However, you should be able to receive calls and send text messages.

Answer 2

theoretically, yes it will work. t-mobile and at&t both are GSM carriers (SIM cards). however, you would need to buy an unlocked sidekick off of ebay because otherwise you will have to purchase t-mobile service. just go onto ebay and search "unlocked sidekick". you should find what you are looking for  

P.S. make sure you buy one that isnt used, that can end up being bad.