https://www.cnet.com/news/sprint-posts-loss-as-it-awaits-a-t-mobile-lifeline/

Sprint also lost 26,000 postpaid phone customers, or people who pay at the end of the month, due to decreased promotions and higher customer defections. But overall customer growth stabilized, with 309,000 total new customers, thanks to data devices. 

It also lost 173,000 customers in the prepaid area, once a strength for Sprint.