I recently purchased a blackbery curve 8330 from ebay. However it did not specify which service provider it was, I have at&t. I just found out that at&t does not make the 8330, only sprint and verizon. Being as I have at&t I have a sim card and I understand that verizon does not. If the phone is for sprint can I use my at&t sim card in the phone I justp urchased? Please let me know.