Every mobile carrier, including AT&T, tends to focus on their postpaid customers. They’re not unfair in doing so, as postpaid customers contribute more money to their accounts than prepaid ones. They’re also a constant source of cash, although that doesn’t mean there’s absolutely nothing on the table for prepaid customers. Focusing only on AT&T, the carrier has introduced some excellent plans for prepaid customers.  One-year 8GB plan for $300 upfront Picking a plan every month can be frustrating, so why not stick with one for the entire year? If it sounds right to you, go with this AT&T prepaid cell phone plan. It is one of AT&T’s best budget options, costing only $300. You’ll get 8GB of data every month, which is more than sufficient for browsing and a bit of streaming. In case you underuse data in a month, it gets carried forward to the next month. 15GB plan for $40 per month $40 is a decent amount to pay for 15GB of data. While it may not be enough for heavy streaming or playing games, it is enough for little to heavy browsing and enjoying music. According to estimates by AT&T, 15GB is enough for over 1,000 emails, 400 hours of streaming music, 40 hours of web browsing, and 15 hours of SD video streaming combined.