Cingular has not rolled out GSM in Alabama yet.
I believe that they are going to do so soon. Once they do you will be able to use an unlocked GSM phone as long as it used the 1900 mhz frequency. I currently use an XDA and SPV Smartphone on T-mobile. Hopefully they (Cingular) will not roll out the new 850 mhz GSM in Alabama.
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