In the US they most certainly do, as do all GSM carriers in the US.
Net10 & Tracfone lock the sims & the phones. So you couldn't even use a net10 or tracfone sim on another one of their phones.
Yes, T Mobile sells phones.
What "are" sprint phones? Sprint is a phone company like T-Mobile or AT&T the phones that they use have the sprint logo on them.
AT&T does not sale refrbished cell phones directly. You can find several refurbished AT&T phones o both Ebay and Amazon.
No at&t phones are not the best on the market because there are several other phones such as smart phones which contain better features and are much less pricey.
No, AT&T is separate
there can be different phones along with at & t and t mobile service. now a days with at & t you get a number of good phones from nokia and sony ericson absolutely free.
Idmk
phones
AT&T cell phones are a great start for a collection. If you look on Ebay or Amazon you can find many AT&T phones for sell and you can even find older ones for the collection.
To look at all the phones that AT&T offer you can go to their official website and look under the "Shop" tab. They also sell AT&T phones at Best Buy and Phone Arena.
AT&T doesn't make phones. Their phones are provided by manufacturers such as Apple, Motorola, HTC, Samsung, etc. Those companies either manufacture those phones or have them manufactured by a subcontractor in Asia.