My Cingular plan Nokia 6102 has been acting up and I am too far from end of contract to get a good phone deal. They can sell me a nnew phone but I must extend plan and I'm not sure I want to do that. At Walmart, the girl said I could buy the At&t Go Phone and put my simm card in and it would work on my plan. I can get a phone cheaper than the deals At&t was offering. I'm just worried my Cingular Orange Simm won't work in the new AT&T phone. Anyone done this?