Hi, I am considering purchasing a used Cell phone and some of the ones that I am looking at are unlocked phones that have either been used with Sprint or with Alltel. They are all unlocked and use the same CDMA network as Cellular South. I got in contact with someone from cellular south and they told me I was probably not able to do it but I just had the feeling that they didn't want to tell me. I just want to know if this would work. If so how would I go about getting them activated. By the way I already have Cellular South service. Would I have to flash the phone or anything to change it over?