Originally Posted by slawecki
I do not have my old phone, but if I did, would both old and new work on the same number, even with the old sim in the old phone? the Cingular agent could not, or would not answer, that question.
Old phone 'should' still work. I don't think the US bars IMEIs. But your old SIM should not. All you need is another sim and you are in business. Or you can swap phones using the same new SIM.