T-Mobile US, Inc. is a leading American wireless network operator, renowned for its 'Un-carrier' strategy aimed at disrupting the mobile industry. The company provides wireless voice and data services, a rapidly expanding nationwide 5G network, and high-speed internet services (fixed wireless and fiber). T-Mobile focuses on delivering affordable, innovative telecommunications solutions and a superior customer experience. Following its merger with Sprint, T-Mobile has solidified its position as one of the largest and fastest-growing wireless carriers in the United States, committed to enhancing connectivity and competition.
Serves as the primary center for T-Mobile's strategic decision-making, corporate operations, technology development (including 5G innovation), marketing initiatives, and executive leadership for its U.S. operations.
A modern, expansive campus designed to foster collaboration and innovation. It features open-plan workspaces, advanced technology labs, extensive employee amenities such as fitness centers and cafes, and reflects a commitment to sustainability in its design and operations.
T-Mobile's Bellevue headquarters is known for its vibrant, high-energy 'Un-carrier' culture. It emphasizes customer obsession, disruptive thinking, diversity, and inclusion, encouraging employees to be bold, take ownership, and work collaboratively in a fast-paced environment.
The Bellevue headquarters is central to T-Mobile's U.S. strategy and brand identity. It's the nerve center for network expansion, technological advancements, and customer-focused initiatives that define its competitive edge in the telecommunications market.
T-Mobile US primarily concentrates its network and retail operations within the United States, Puerto Rico, and the U.S. Virgin Islands, offering robust nationwide 5G coverage. While its direct operational footprint is U.S.-centric, its parent company, Deutsche Telekom (headquartered in Germany), maintains a vast global presence. T-Mobile US customers enjoy extensive international roaming capabilities through Deutsche Telekom's global network and numerous partnerships with carriers worldwide, ensuring connectivity in most countries.
12920 SE 38th Street
Bellevue
Washington
United States
Address: 6200 Sprint Parkway, Overland Park, KS 66251
Supports T-Mobile's nationwide network infrastructure and serves as a key center for Midwest operations, technical talent, and various corporate functions.
Address: 3560 Dallas Pkwy, Frisco, TX 75034
Supports T-Mobile's growth in the southern United States and acts as a hub for technological development and customer engagement, tapping into the Dallas-Fort Worth area's rich tech talent.
Address: 12524 Sunrise Valley Dr, Reston, VA 20191
Serves as a key strategic location for engaging with federal agencies and supporting T-Mobile's business and network operations on the East Coast.
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As of April 2025, T-Mobile' leadership includes:
T-Mobile has been backed by several prominent investors over the years, including:
In the past year, T-Mobile has experienced key leadership evolutions, particularly within its technology and marketing divisions. These changes reflect the company's strategic focus on advancing its 5G leadership, enhancing product strategy, and ensuring robust succession planning to drive future growth.
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T-Mobile primarily uses a consistent email format for its corporate employees, which is helpful for professional communication. The most common structure is 'firstname.lastname@t-mobile.com'. While minor variations might exist for some individuals or departments, this format has a high success rate for outreach.
firstname.lastname@t-mobile.com
Format
mike.sievert@t-mobile.com
Example
90%
Success rate
T-Mobile Newsroom • 2024-05-01
T-Mobile and EQT, a global investment organization, announced a joint venture to acquire Lumos, a fiber optic internet and home phone service provider. T-Mobile will invest approximately $950 million in the JV, aiming to accelerate Lumos's fiber network expansion and bring high-speed internet to more homes and businesses....more
T-Mobile Newsroom • 2024-04-25
T-Mobile announced robust Q1 2024 financial results, highlighting industry-leading postpaid net account additions and customer growth. The company emphasized its continued 5G network leadership and strong performance in broadband services....more
T-Mobile Newsroom • 2024-02-01
T-Mobile announced that it once again swept third-party network performance reports in Q4 2023, being recognized for the fastest overall network speeds, widest 5G availability, and most consistent network performance across the United States....more
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