T-Mobile US, Inc., commonly shortened to T-Mobile, is an American wireless network operator. Its largest shareholder is the German telecommunications company Deutsche Telekom (DT) with a 43% share, with Japanese conglomerate holding company SoftBank Group partially owning the company as well at a 24% share. The remaining 33% share of the company is owned by the public through common stock. Its headquarters are located in Bellevue, Washington, in the Seattle metropolitan area. T-Mobile is the second-largest wireless carrier in the United States, with 98.3 million customers as of the end of Q2 2020.T-Mobile US provides wireless voice and data services in the United States under the T-Mobile and Metro by T-Mobile brands (which it acquired via the purchase of Metro PCS in a reverse takeover in 2013, resulting in T-Mobile going public on the NASDAQ stock exchange), and also serves as the host network for many mobile virtual network operators. The company has annual revenues of over $40 billion. In 2015, Consumer Reports named T-Mobile the number one American wireless carrier.On April 1, 2020, T-Mobile US and Sprint Corporation completed their merger with T-Mobile now being the whole owner of Sprint, making Sprint an effective subsidiary of T-Mobile until the Sprint brand was officially phased out. Leadership, background, and stock changes happened immediately, with customer side changes happening over time. The Sprint brand was officially discontinued on August 2, 2020. Billing was already showing the T-Mobile brand, and on this date all retail, customer service, and all other company branding switched to the T-Mobile brand. New rate plans were also introduced as well for all new and existing customers from both companies, though all will be grandfathered into their current plan should they choose not to switch to a new T-Mobile plan for at least 3 years.