T-Mobile US Expects Core Adjusted EBITDA To Be $37.0B–$37.5B In 2026; Expects To ~ Double Its Q1 2026 Share Repurchases To Up To $5.0B; Expects $3B Core Adjusted EBITDA Contribution From AI By End Of 2027; Sees Q1 2026 Workforce Transformation Charges Of About $150M; Expects Network Restructuring Costs Of About $450M In 2026, Primarily Split Between Q1 & Q2 2026