Unlocked Phones

[Ash J]

If I have an at&t phone service, and I buy an unlocked Blackberry Storm (which at&t does not carry) can I still use my at&t sim card? or does I have to get new phone service from Verizon ( which does carry this phone)?

 

[matt_mu]

if its unlocked then you can use any SIM card in the phone as long as the phone is GSM