which 3g smart phone from samsung is compatible with airvoice wireless

[saishreemathi]

    I just switched to airvoice wireless.
    I am so confused how to buy a phone.
    I thought any at&T data phone will work with airvoice. I just found out today that my blackberry 8520 which works with at&t data is not supported by airvoice data. They say any unlocked gsm 850/1900 phone will work, but this blackberry 8520 will not work. Looks like I need to buy a new phone now, but they do not want to share their list of airvoice supported smartphone list.