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Reach T-Mobile Corporate Office Headquarters 

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T-Mobile Corporate Office is located in Washington, USA. More information to reach out to T-Mobile is listed below, including the T Mobile corporate office address, phone numbers, and websites. Also, customer reviews and T-Mobile complaints.

How to Contact T-Mobile Corporate Office Headquarters HQ

Address: 12920 SE 38th St. Bellevue, WA 98006 USA

T-Mobile Phone Numbers and Contact Information

T Mobile Headquarters Phone Number: 1-425-378-4000
Fax Number: 1-425-378-4040
TTY: 1-877-896-1018
Customer Service Number: 1-877-453-1304
Business Customer Service: 1-888-537-4242
Website: T-Mobile.com

T-Mobile Corporate Office HQ

Maps and Directions To TMobile Corporate Office Location

T-Mobile Competition

T-Mobile competes against major rivals like AT&T, Verizon, and Xfinity. Known for its ‘Un-carrier’ approach, T-Mobile has differentiated itself by challenging industry norms and placing a strong emphasis on customer service. They also own Metro by T-Mobile. Other smaller competitors include Mint Mobile, Boost Mobile, US Cellular, Google.

T-Mobile HQ
T-Mobile HQ on Earth Day

Disclaimer:

CorporateOfficeHeadquarters.com is not affiliated with T-Mobile. The content here is for informational purposes, offering a platform for reviews and user feedback.

T-Mobile Disappointing Customer Service

May 1, 2025

T-Mobile Claims to prioritize customer service simply isn’t borne out by my experience. For six weeks I’ve been chasing answers about a double payment, unexplained rate hikes, and conflicting information from representatives. Each time I ask for a resolution or to speak with someone at headquarters, I’m told, “We’ll look into it and get back to you,” but I never hear back—and meanwhile I’m hit with a $10 “assisted support” fee every time I call. When I canceled internet service to lower my bill, my total charges actually went up by $35, and when I asked why, my service was abruptly disconnected. This is anything but customer-centric—it feels like all they want is our money, and then they vanish. I need someone at corporate to address: The double charge and unexplained rate fluctuations. Access to a knowledgeable manager at headquarters. Restoration of service until we resolve these billing errors. Until then, I remain a frustrated customer paying for promises that T-Mobile never keeps.

Victor Mercado

T-Mobile Disappointing Experience

May 1, 2025

T-Mobile, Zero stars for T-Mobile. The absolute worst customer service I have ever experienced! Information given in response to valid concerns do not make any sense at all. In an effort to lower my bill to what I was told it would be, paying off the devices early, T-Mobile informed me that I should not pay off devices early because it messes up their system! Then, the corporate office representative leaves a message to call and she will return the call within one business day. It has been a week without her doing so.

Francis Frank Lipscomb

T-Mobile iPhone Frustrating Locked Issue

April 26, 2025

T-mobile, My iPhone. T-Mobile is terrible. Won’t unlock my iPhone! I even offered to pay them to unlock it. No deal. And for everyone out there that has a complaint with them, they don’t care about it. How do think they got where they’re at? The ceo is laughing all the way to the bank.

Chris Irons

T-Mobile Disappointing Customer Service

April 23, 2025

T-Mobile, Online services and Customer Support. I have been trying for 3 weeks to get a PDF copy of my bill. I have used the Tlife App and tried on two computers and different browsers without success. I have spent more than 8 hours on the phone with 9 agents and 4 supervisors in the Philippines with no success. I have been denied Tier 2 escalations to US support. I have been a customer for 20 years and never have I had so many problems for a simple service that should be available to me as a customer. I feel this issue needs to be escalated but am not able to reach someone in the US. This is unacceptable.

Andi Campbell

T-Mobile Cedar Rapids IA Disappointing Experience

April 22, 2025

T-Mobile, Customer Service. The over-the-phone customer service is wonderful but here in Cedar Rapids IA the retail store on Blairsferry Rd is a horrible place. The new “manager” is a terrible and incompetent person. I had to deal with him twice now. The worst experience yet in my life. Finally I decided to complain about this awful individual who is ruining the reputation of T-Mobile.

Melinda Nagle
Corporate Office Headquarters