Keeping track of the top 8 U.S. carriers' performance

Sprint (NYSE: S) clung to its spot as the No. 3 U.S. carrier in the first quarter, slightly edging out T-Mobile US (NYSE:TMUS). The carriers continued to see their average revenue per subscriber fall as more consumers chose equipment installment plans and carriers saw revenues shift from service revenue to hardware. How are the largest U.S. carriers faring on those key metrics? The following report charts the top U.S. wireless carriers in the first quarter of 2015 by subscriber base, according to research firm Strategy Analytics, and includes major metrics--such as churn, ARPU and revenue--of each carrier. As the first-quarter reporting season comes to a close, it's time to start parsing the information to see which carriers slipped and which managed to get ahead. Special report