Key Takeaways AT&T's fiber expansion and convergence strategy are driving steady customer additions.T expanded fiber to 32M passings and added 1M fiber net adds in 2025.T-Mobile added 7.8M postpaid net customers but faces higher churn and merger costs.T-Mobile US, Inc. (TMUS) and AT&T Inc. (T) are two of the largest U.S. wireless and broadband providers, competing directly on 5G network expansion, subscriber growth and pricing in the highly competitive telecom market.The U.S. telecom industry is presently d ...