Here are some key metrics from the top five carriers in the U.S.: Alltel, AT&T, Sprint Nextel, T-Mobile USA and Verizon Wireless. Check out the tables below to see how these carriers performed in terms of churn, ARPU (Sprint's is postpaid only) and net subscriber additions. Private equity firms acquired Alltel last year which is why none of its metrics were released for the fourth quarter.
