T-Mobile is the second-largest wireless carrier in the United States, serving millions of customers nationwide from its headquarters in Bellevue, Washington. Founded in 1999, the company provides mobile phone, data, and wireless services. It operates what it describes as America's largest 5G network, offering both Extended-Range 5G for broad coverage and Ultra Capacity 5G for high-speed connectivity in urban areas.
The company's portfolio includes several service brands. Beyond its primary T-Mobile postpaid offerings and unlimited data plans, it operates prepaid wireless brands such as Metro by T-Mobile, Mint Mobile, and Ultra Mobile. It also provides business-focused wireless solutions and television streaming services.
T-Mobile has positioned itself through its "Un-carrier" strategy, which involves challenging traditional telecom industry practices. The company employs over 10,000 people, with technical work spanning 5G network technology, wireless communications, and mobile networking.






