Sprint, the nation's third largest wireless provider, is not happy about AT&T's acquisition of T-Mobile. Once AT&T and T-Mobile are officially merged, the only major players in the U.S. wireless space will be AT&T, Verizon and Sprint.
The problem is, Sprint isn't that much of a "big player" anymore. The network has been falling behind the success of AT&T and Verizon (both of which sell the iPhone), and there isn't much traction left for Sprint to make a dent in AT&T and Verizon's market share.