Yes. GSM phones (phones sold by T-Mobile and AT&T) use triangulation.
All the phones from AT&T with signatures are smart phones so every single phone from there is very good and very modern and new.
There are not any possible coupons that you can use for AT&T pay as you go phones. Coupons for phones are usually hard to come by.
T-Mobile has a few new phones that will be available for the holidays. They are coming out with 4 Android phones, all of which will cost under $100. To go with these new phones T-Mobile will also be offering new data plans to purchase.
The phones that are available for the no contract prepaid plan with T-mobile are Concord, Nokia X2, T Mobile 665, LG Optimus, My Touch, Blackberry Curve, and just about any Samsung phone. All T-mobile phones are also available to use prepaid.
You can find at&t phones for sale from all major retailers as well as 3rd party resellers. The best thing to do is visit major stores like WalMart,amazon and target to see if they have any at&t phones for sale.
Yes, T Mobile sells phones.
Boost mobile phones and AT&T mobile phones are very similar. In fact, some of the phones are identical. While Boost definitely is cheaper for service, I can't say that their phones are any better.
No, AT&T does not offer any coupons for its phone plans. They only offer coupons if you are buying specific 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.
Slim cell phones can be purchase online or directly at any cell phone carrying stores. You can go directly to the service providers such as T-Mobile, AT&T, or US Cellular, or you can go to stores such as Walmart, K-Mart, or any other stores which carry cell phones.