I was recently a Sprint, T-Mobile, and Att subscriber. Out of those 3, Att had the best coverage in my area, but also was the most expensive. So I did some research and found out that Att purchased Cricket. They are a MVNO(Mobile Virtual Network Operator) and use Att's network towers. I have been on Cricket for over 2 years and love it. Once I saw a discount for these prepaid cards, I jumped on it. You can use these prepaid cards to pay your monthly bill even if you're signed up for the monthly auto pay. I'm signed up so I know. I can't believe most people pay expensive Att prices, when they can come over to Cricket for a fraction of the cost. Yes, I know they throttle you to 8mbp's download speeds, but honestly that is more than enough when you want to download something. Upload speed is awesome. I have never had an issue with them at all. To be able to spend $50 on a $70 prepaid card is a huge savings for me.