T-Mobile boosted its outlook for the year after posting a strong second quarter in which it led postpaid net additions for the 10th straight quarter and achieved record low churn.

During the quarter, T-Mobile pulled in 1.9 million total net additions, including 646,000 postpaid phone net additions and 476,000 branded prepaid net additions. The latter figure was up 167 percent year over year, which T-Mobile attributed to strong growth in its MetroPCS brand. Total branded postpaid additions of 890,000, however, were down from 1 million in the same quarter last year.

T-Mobile said branded postpaid phone churn hit a record low of 1.27 percent, down 6 basis points sequentially and 5 basis points year over year.

Total revenues of $9.2 billion were up 12.8 percent year over year, and service revenues of $6.9 billion were also up around 12 percent year over year. Net income slipped from $361 million a year ago to $225 million in the second quarter, but earnings per share of 25 cents beat Wall Street expectations by 3 cents.

On the strength of those numbers, T-Mobile raised its full year guidance for branded postpaid net additions from 3.2 to 3.6 million to 3.4 to 3.8 million.

As of 12:35 p.m. ET, T-Mobile stocks were up 1.5 percent on the news.

T-Mobile CEO John Leger also heralded the success of the Un-carrier 11 move, particularly T-Mobile Tuesdays.

Legere said “when you launch these things you never know which is going to strike the nerve of the nation,” but noted T-Mobile Tuesdays appeared to have hit the mark.

According to Legere, the T-Mobile Tuesdays app hit number one overall for several days in Apple’s App Store before being supplanted by Pokemon Go. Legere quipped the figure compared more than favorably with the 790 ranking of Verizon’s go90 app.

T-Mobile Tuesdays was also a hit on social media, drawing more than 6.6 billion impressions, Legere said, a figure that was higher than those pulled any other Un-carrier move. Part of the appeal, Leger said, is that T-Mobile Tuesdays simply thanks customers rather than asking them to comply with certain conditions the way loyalty programs do.

On the network side, T-Mobile CTO Neville Ray said the carrier’s roll out of low band spectrum is “ahead of schedule” and noted T-Mobile “will have a much bigger number than 200 million POPs covered on low band by the end of the year.” T-Mobile said it plans to “aggressively” roll out new 700 MHz sites across the country throughout the rest of this year, including in cities like San Francisco, Phoenix, San Diego, and Las Vegas.

According to Ray, 57 percent of T-Mobile’s voice traffic is now carried over LTE, up from 16 percent in the same period last year.

During the quarter, T-Mobile sold 8.1 million smartphones, with an upgrade rate of 6 percent. At the end of the June quarter, the Un-carrier said 95 percent of its postpaid customer base was on a Simple Choice plan, up from 93 percent the year prior. T-Mobile said 14 million of its customers were also enrolled in its JUMP! Upgrade programs, up from 11.3 million in the same quarter last year.