Would a cingular sim card work in an AT&T BlackBerry 7280?

[Shelly]

would a cingular phone sim card work in that kind of blackberry

[tasteyy]

Now Blackberry 7280 needs to Unlocked from AT&T Network Lock.Then you can use any GSM Network Sim card in the Phone.Without Unlocking you can't use the Cingular Sim card.You can get the Unlock code for Blackberry 7280 Model Phone at Mobileunlocksolutions.com/blackberry-7280/rs1wp9/ and unlock it from network Lock.