UScellular Headquarters Address, Corporate Office Location, and Contact Details
UScellular is headquartered at 8410 West Bryn Mawr Avenue, Suite 700, Chicago, IL 60631. Customer service runs at 1-888-944-9400. After the 2025 sale of its wireless operations to T-Mobile, the remaining company continues from the same Chicago offices.
| Headquarters address | UScellular 8410 West Bryn Mawr Avenue, Suite 700 Chicago, IL 60631 United States |
|---|---|
| Corporate HQ phone | (773) 399-8900 |
| Customer service | 1-888-944-9400 |
| Website | uscellular.com |
About UScellular
UScellular was for decades the largest regional wireless carrier in the United States, serving about four and a half million customers across twenty-one states, mostly in the Midwest, New England, and the Mid-South, from its Chicago headquarters in the Bryn Mawr office corridor. The company was controlled by Telephone and Data Systems (TDS), which held a supermajority voting stake, and it built its business on rural coverage, local retail stores, and aggressive government-spectrum participation.
In August 2025 T-Mobile completed its acquisition of UScellular’s wireless customers and stores, and the brand began transitioning subscribers to T-Mobile while the remaining company, holding towers and spectrum, continued under the new name Array Digital Infrastructure. That two-track status is why customers searching for the corporate office now find a mix of classic UScellular contact routes and transition notices.
UScellular Phone Numbers and Contact Directory
| Customer service | 1-888-944-9400 |
| Corporate office | (773) 399-8900 |
What Brings You Here? Find the Right Contact
- Existing account, billing, or device question: call 1-888-944-9400 or use the myUScellular account tools; transition-period notices may redirect some requests to T-Mobile channels.
- T-Mobile transition question: T-Mobile support is 1-800-937-8997 or 611 from a T-Mobile phone, per the transition communications.
- Corporate, tower, or spectrum inquiry: corporate functions at the Chicago offices handle business partnerships; use the corporate contact routes at the company’s site.
- Investor relations: investor contacts run through the company’s investor relations site and TDS relations for historical matters.
- Media inquiry: press contacts are listed on the corporate newsroom pages.
UScellular Corporate Headquarters and Office Addresses
Corporate headquarters
UScellular
8410 West Bryn Mawr Avenue, Suite 700
Chicago, IL 60631
United States
What changed in 2025
T-Mobile completed the acquisition of UScellular’s wireless customers and retail stores on August 1, 2025. The remaining tower and spectrum business continues as Array Digital Infrastructure from the same Chicago offices.
The Bryn Mawr headquarters sits in the O’Hare corridor of northwest Chicago, a classic Midwest corporate office district. The building remains the seat for the remaining infrastructure company during the brand transition, so both UScellular and Array identities point to the same address.
How to Escalate a Complaint to UScellular Corporate
- Call customer service first. Use the published support number (1-888-944-9400) and document the date, the representative’s name, and the case reference number before you hang up.
- Ask for a supervisor or the escalation team. First-line agents have limited authority; supervisors, retention, or executive-relations teams can approve credits, refunds, and exceptions.
- Move the case to a written channel. Email, secure chat, or an in-app case creates a timestamped record that is far stronger than phone notes when you escalate further.
- Send a certified letter to the headquarters. Write to UScellular, 8410 West Bryn Mawr Avenue, Suite 700, Chicago, IL 60631, United States. Include your account or order number, prior contact dates, representative names, and the specific resolution you want.
- File with the FCC. Telecom carriers must respond to FCC complaints within 30 days. File at fcc.gov/consumers/guides/filing-informal-complaint.
- File with your state utilities commission. The Illinois regulator can investigate service quality, billing, and disconnection issues.
- File with the FTC and the BBB. Use reportfraud.ftc.gov for deceptive practices and bbb.org for a documented company response.
- Contact your state Attorney General. Many state AGs run dedicated telecom and consumer-fraud units that act on pattern complaints.
Frequently Asked Questions
Where is the UScellular corporate office?
UScellular is headquartered at 8410 West Bryn Mawr Avenue, Suite 700, Chicago, IL 60631.
What is the UScellular customer service phone number?
Customer service is 1-888-944-9400. During the T-Mobile transition, some notices route customers to T-Mobile support at 1-800-937-8997.
Did T-Mobile buy UScellular?
Yes. T-Mobile completed the purchase of UScellular’s wireless customers and stores on August 1, 2025, and the remaining towers-and-spectrum company was renamed Array Digital Infrastructure.
Who owns UScellular?
UScellular was controlled by Telephone and Data Systems (TDS), which held a large majority of voting power; after the 2025 transaction the infrastructure business continues under TDS control as Array Digital Infrastructure.
What happens to my UScellular plan?
Customers transition to T-Mobile plans on the schedule communicated by mail and email; monitor notices closely, keep written records, and raise porting or billing errors immediately with both carriers.
How do I file a complaint against UScellular?
Document the account history, then file with the FCC at fcc.gov/consumers, your state Attorney General’s consumer division, and the BBB. Certified letters can be sent to 8410 West Bryn Mawr Avenue, Suite 700, Chicago, IL 60631.