Blackberry's on the Cingular & AT&T network...
No. AT&T locks their phones only to AT&T SIM cards. However, since Dobson phones are unlocked, you would be able to put in an AT&T SIM into a Dobson phone, but that really doesn't help you, lol.
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To correct you michael_herc, our Blackberry devices are also locked to the network. Either way, AT&T SIM cards won't work in Dobson Blackberries and vice versa. There is always an option to unlock your phone, but you must get with your respective carriers to do so. Matter fact, I'm the relay guy for unlock requests on Dobson.
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