T-Mobile Customer Service

If you need to contact the T-Mobile customer service department by phone, you can choose from one of the available customer service phone numbers. The customer service helpline is available from 3 a.m. to 10 p.m. PST 7 days a week. The automated line is open 24/7.

General customer service (purchases): 1-800-866-2453

Business customer service: 1-888-537-4242

Customer service helpline: 1-877-453-1304

TTY: 1-877-296-1018

TTY services are available between the hours of 5 a.m. and 10 p.m. PST daily.

T-Mobile Mailing Address

Customers who wish to contact T-Mobile customer service by mail can send all letters to:

T-Mobile Customer Relations
PO Box 37380
Albuquerque, NM 87176-7380

This address should be used for customer service contact only. Billing inquiries should be sent to the billing address on your statement.

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