I have Verizon, but have the fewest minutes available. Use it for people to be able to reach ME because I have dial up and have the computer on so much! I do most of my calling on the weekends or at nite. Had ALL the texting features disconnected on my phone and have my original phone that is a real dinosaur! Got this because other family memebrs have it. Some have Sprint, but I didn't talk to them when I signed up. Have not had any problems, so don't know about customer service other than getting the texting removed. :?