When I put any non-ATT sim in my ATT 650 i get the following message:
"Your phone cannot be used with this SIM card"
I am never prompted for an unlock code. I called Att/Cingular and they gave me the 8 digit code to unlock but it doesn't work, i tried the #*#*xxxxxxxx# and still nothing. When i call CS back, they tell me they can't help me and they are not authorized to give out unlock codes.

Can the ATT 650's be unlocked?