Shares of T-Mobile US (TMUS -1.56%) jumped as much as 7.6% higher on Thursday morning, following the release of strong second-quarter results. As of 1:20 p.m. ET, the stock cooled down slightly to a 6.5% price increase.

Image source: Getty Images.
T-Mobile's popular premium plans
T-Mobile added 1.7 million postpaid net customers in the second quarter, led by a doubling of sign-ups for the premium-priced Experience Beyond plan. As a result, sales rose 6.9% year over year to $21.1 billion, just above the consensus analyst target at $21 billion. Earnings jumped from $2.49 to $2.84 per share, stumping the Street view of approximately $2.68.
Building the network of tomorrow
The company is posting industry-leading results while closing a couple of promising acquisitions.
T-Mobile added 97,000 fiber-optic broadband customers from Lumos in the second quarter, and the pending buyout of UScellular will boost the company's network from 9,000 to 12,000 sites on Aug. 1. Its fixed broadband offerings are expanding with Lumos fiber, the recently launched T-Satellite service, and a wider range of home network options based on wireless 4G and 5G services.
The magenta network is not sitting on its hands, but taking concrete action to stay on top of the American mobility market.