How can I make a Nokia phone that was on Cellular One system work on ATT system using ATT sim card.?
I have a Nokia 6085 cell phone that was on Cellular One system , Cell One in my area is now ATT. I put my ATT sim card in this phone and have phone and text, However I can't do multimedia and internet both of which are on my plan. Is there a code to unlock these features on this phone? ATT says no.