What drove TMUS's earnings growth in 2024?

T-Mobile US Inc.'s (TMUS) earnings growth in 2024 was driven by several key factors:

1. **Strategic Focus on Digitalization and Customer Experience**: T-Mobile's emphasis on digitalization, customer experience, and network improvements has positioned it for competitive edge in the telecommunications sector. The company's investment in digital channels and customer service has likely contributed to its robust growth.
2. **Network Improvements and 5G Leadership**: T-Mobile's focus on enhancing its 5G network through strategic spectrum trades has optimized its 5G capabilities. The company's aggressive stance on 5G has positioned it well for future device upgrade cycles, with over 80% of customers on 5G devices.
3. **Strong Q3 Performance and Raised Guidance**: T-Mobile's third quarter of 2024 was marked by its best Q3 postpaid phone net additions in a decade and a record low churn rate. The company raised its full-year guidance, reflecting confidence in its growth strategy.
4. **Broadband Segment Growth**: T-Mobile's broadband segment reached 6 million customers, indicating successful expansion into the fixed-wireless market. The company aims to transition from a challenger to a champion in the telecommunications industry, and its multi-year plan includes detailed initiatives to enhance operational efficiency and customer service.
5. **Financial Highlights**: T-Mobile's diluted earnings per share (EPS) and free cash flow reached record levels, with EPS of $2.57 exceeding expectations. The company's core adjusted EBITDA grew by 10% in Q4, driven by an 8% increase in postpaid service revenue.

In summary, T-Mobile's earnings growth in 2024 was driven by strategic investments in digitalization and customer experience, network improvements, successful expansion into the broadband market, and strong financial performance.