The "Big Four" cell phone carriers in the US -- AT&T, T-Mobile, Sprint, and Verizon -- are now just three, since Tmobile and Sprint have completed their merger. These companies pay big money for advertising, and charge big prices as a result. What most people don't know is that these companies are required to let smaller companies re-sell their services and use their network, often resulting in sizable savings.
My personal favorite is Ting, which offers tiered rates that automatically adjust based on your usage. You don't have to predict how many minutes or megabytes you'll use next month; instead, you simply pay a small per-device fee, and then