I have used straight talk for many years now. I have had verizon, att, and tmobile providers all under straight talk on multiple phones. each phone model they sell can have a different provider it seems. My question is, how do I know which provider I will get with each phone? my current phone uses verizon towers, but I would like to get another that uses ATT towers as there is a verizon dead zone just north of us. I would use the ATT phone when I need it but keep the verizon as primary. I cannot find any info online and the people at walmart were clueless. my only guess is it depends on 3g,4g,lte whichever the phone uses. I guess I will have to contact straight talk but i hate going through automated systems and talking to someone in india. can anyone shed some light on what seems like a big secret??