What USA mobile phone company uses SIM cards?

What USA mobile phone company uses SIM cards?


I use an unlocked cell phone when I travel overseas, to cut down on the cost. I was wondering if any US phone companies use SIM cards.

What USA mobile phone company uses SIM cards?
T-Mobile %26amp; Cingular (At%26amp;t) use the SIM card technology. Verizon and Sprint do not. Phones with SIM card features are better because they can be used overseas as you mentioned. Therefore, you will have a hard time using your Verizon or Sprint phone overseas..
Reply:I use cingular and they do use sim Cards and they just bought out At%26amp;t whom also use Sim cards.. I think most U.S wireless use the Sm card that is why people here are always looking to buy unlocked phones
Reply:almost all companies are using sim cards these days
Reply:T-Mobile, Cingular
Reply:T-Mobile