T-Mobile US (TMUS) shares surged 5.13% in after-hours trading on Wednesday, following the release of its second-quarter earnings report that exceeded analyst expectations and an increase in its full-year subscriber growth forecast.

The telecommunications giant reported earnings per share of $2.84, surpassing the analyst consensus estimate of $2.67. Total revenue for the quarter came in at $21.13 billion, beating the analyst expectations of $21.02 billion. T-Mobile's strong performance was further highlighted by the addition of 830,000 postpaid phone customers, significantly outpacing the FactSet estimate of 700,300 additions.

In a move that signals confidence in its growth trajectory, T-Mobile raised its annual forecast for postpaid net customer additions. The company now expects to add between 6.1 million and 6.4 million subscribers in 2025, up from its previous projection of 5.5 million to 6 million additions. This upward revision reflects the continued strong demand for T-Mobile's top-tier mobile services, driven by attractive plans that bundle streaming services and come with price guarantees. The company's aggressive promotions and add-on perks have helped it maintain an edge over rivals and increase its market share in a competitive telecom landscape.