T-Mobile is a wireless network operator that provides mobile phone and internet services to customers in the United States and internationally. The company was founded in 1994 and is headquartered in Bellevue, Washington. T-Mobile is known for its competitive pricing and unlimited data plans, as well as its popular "Un-carrier" marketing campaign. In 2020, T-Mobile merged with Sprint Corporation, becoming one of the largest wireless carriers in the United States.
T-Mobile operates 157 locations in Washington as of April 29, 2024.