I know Pure Talk uses the AT&T towers. Had to make sure of that because my parents spend 4-5 months in Florida each year and didn't want to take a chance since their trailer has really good reception with those. I've never had much issue with the AT&T service either. Must be where I hang out, I suppose.Those that are on secondary mobile company plans need to realize you are using 1 of the 4 major carriers service tower still and should find out which it is. I have used all but t-mobile service in the past. My daughter had t-mobile and only had service within any city. Verizon was the best back in the early to mid 2000s and just went down hill from there sprint/nextel was so hit and miss just like t-mobile...att had alot of dead spots but got so much better as time went on. Late 2010 Verizon got bad with drop calls and such, so i left them and the old flip phone behine for straight talk using AT&T towers. Was good but couple years with them, service became terrible with straight talks phone settings. Dropped them for cricket for 3 phones at $90 a month with 10gb of data. The problem with secondary carriers is that everyone else has priority over you when it comes to data use, so if you have internet at home...make sure you're connected to home wifi.