Led by Legere, T-Mobile has garnered nearly all the new phone customers among the major carriers, Entner said. In 2014, there were 3.6 million net new phone customers for the four largest carriers. During that period, T-Mobile added 4 million new customers, while Sprint lost 2.1 million, while AT&T and Verizon were "an afterthought," Entner said.
"T-Mobile is dynamic, and they have monopolized the entire growth in customers in the industry," Entner said.
While Legere gets criticized for using explicit language in his tweets and public appearances, Entner said he is actually"very capable and charismatic...His foul language is his act, his schtick. He gets free advertising because everybody talks about him."
Eric Costa, an analyst at Technology Business Research, said T-Mobile trails Sprint in revenues, "but does not seem to be slowing down anytime soon with its Un-Carrier strategy and Simple Choice plans." Because T-Mobile is adding postpaid customers, including those with higher value accounts, he said T-Mobile has a "long-term advantage over Sprint, as those subscribers will increase service revenue growth." He said that T-Mobile "continues to outperform" Sprint in revenue and subscriber growth.
Sign up for CIO Asia eNewsletters.