T-Mobile Customer Service Numbers: Wireless, Billing, Internet and Complaints

T-Mobile’s main customer-service phone number is 1-800-937-8997. From a T-Mobile phone, dial 611. Use the T-Life app for 24/7 support access and account-aware messaging; use a dedicated number below for T-Mobile Prepaid, Business, Home Internet, Fiber or international help.

Updated August 30, 2026. Phone numbers, representative hours and support routes were checked against T-Mobile’s current contact, customer-care, business, prepaid, Home Internet, international and account-security pages.

T-Mobile Customer Service Numbers

These routes are for T-Mobile-branded service. Metro by T-Mobile and Mint Mobile are related brands, but their customers should use their own account apps and support teams rather than assuming the main T-Mobile line can access those accounts.

Best T-Mobile Support Route by Issue

• Postpaid wireless bill, plan, device or account: Use T-Life, dial 611 or call 1-800-937-8997.
• Prepaid refill, PIN, balance, activation or transfer: Use the prepaid account or call 1-877-778-2106.
• Mobile network or device problem: Use T-Mobile’s device troubleshooting first, then contact wireless customer care.
• Home Internet gateway, speed or connection: Use T-Life or call 1-844-275-9310.
• Fiber connection or equipment: Call 1-844-783-4237.
• Business account: Use Account Hub or call 1-855-984-3998.
• Roaming problem outside the United States: Call +1-505-998-3793.
• Unauthorized SIM, number transfer or account change: Contact T-Mobile immediately and secure connected accounts.

T-Mobile Customer Service Hours and Live Chat

T-Mobile currently lists Customer Care representatives as available daily from 4:00 a.m. to 9:00 p.m. Pacific Time. Team of Experts availability is listed as 7:00 a.m. to 9:00 p.m. local time. T-Mobile says support starts 24/7 in the T-Life app, with live-agent chat available from 4:00 a.m. to 12:00 a.m. Pacific Time.

Automated tools may remain available outside representative hours. Dedicated Business, Prepaid, Home Internet and Fiber teams can use different schedules, so check the official page tied to that service before making a time-sensitive call.

What to Have Before Contacting T-Mobile

• The T-Mobile telephone number or account number
• Account-holder name and billing ZIP code
• Account PIN or passcode; enter it only through a verified T-Mobile route
• The affected line, device model and operating-system version
• IMEI, EID, SIM or eSIM details when relevant, but never post them publicly
• Bill date, exact charge, payment confirmation and prior statement for billing problems
• Promotion name, offer screenshot, purchase date and required line or plan
• Trade-in tracking, condition photographs and submission confirmation
• Order, rebate, ticket, fraud-case or prior-contact number
• Service location, date, time and troubleshooting already completed for coverage problems
• Gateway name, signal reading and speed-test results for Home Internet
• The specific correction, credit, replacement or other resolution requested

Save chat transcripts, case numbers and written offer terms. Do not place passwords, one-time codes, account PINs, Number Transfer PINs, full card numbers, IMEI numbers or identity documents in a public review.

T-Mobile Billing, Charges and Payment Arrangements

If a bill changed, compare it line by line with the previous statement. Look for a plan or add-on change, device installment, promotion ending, trade-in credit, protection plan, international usage, late fee, restore fee, AutoPay change, tax or subscription. Ask the representative to identify the exact account action and date that created the charge.

T-Mobile’s current payment-arrangement page says arrangements are available to eligible postpaid customers who need additional time. The account must be less than 30 days past due to start an arrangement, and any amount 31 or more days past due must be paid first. Set up or manage the arrangement in T-Life, My T-Mobile or the automated phone system. Review installment dates, possible late or restore fees and how the arrangement affects AutoPay before submitting it.

For a payment or credit dispute, record the date, amount, payment method, confirmation number and promised adjustment date. A verbal credit is not complete until it appears on the account.

T-Mobile Promotions, Trade-Ins and Device Credits

Promotion complaints often depend on eligibility details such as the plan, new line, number transfer, purchase channel, qualifying device, trade-in condition, submission date and installment-credit schedule. Save the complete offer before changing a plan or surrendering a device.

For a missing trade-in or promotional credit:

1. Confirm the promotion name and purchase date.
2. Verify that the plan, line and device met the written terms.
3. Locate the trade-in tracking and delivery confirmation.
4. Compare the expected credit timing with the bill.
5. Ask T-Mobile which eligibility requirement or processing step is incomplete.
6. Request a case number and a specific follow-up date.

T-Mobile Device, SIM, eSIM and Activation Help

For an activation, SIM or eSIM problem, connect to Wi-Fi, update the device, confirm compatibility and unlock status, then use the official T-Mobile device tutorial. T-Mobile says many SIM and eSIM changes can now be completed in T-Life under Manage, Device details, and Activate or change SIM.

If a phone is lost or stolen, suspend the affected line promptly, change important passwords and use the appropriate device-location feature. Contact T-Mobile about the line, SIM or replacement. A device-protection claim may be handled by the protection provider connected to the plan rather than by general Customer Care.

Do not repeatedly guess a SIM PUK code. T-Mobile warns that too many incorrect entries can require SIM replacement.

T-Mobile Coverage, Data and Outage Help

First determine whether the problem affects one device, every T-Mobile device at the location or several nearby locations. Record the address or ZIP code, indoor or outdoor location, time, signal indicator, error message and whether calls, texts and data are all affected.

For one device, restart it, turn Airplane Mode on and off, install software updates and follow the device-specific network tutorial. For multiple devices, check T-Mobile support and the T-Life app for account or network information before changing settings. If emergency calling is affected, use another working connection or device.

When reporting a recurring problem, provide two or three recent examples with the date, time, location and affected service. Ask for a network or technical-support ticket rather than opening unrelated duplicate cases.

T-Mobile Prepaid Customer Service

Call 1-877-778-2106 for T-Mobile Prepaid account access, activation, eSIM, refill, balance, PIN or number-transfer help. For a free automated refill, dial *ADD from a T-Mobile device or call 1-877-720-5195.

T-Mobile currently says assistance from a Care expert with a prepaid payment can result in a payment-support charge. Use the online account, guest payment or automated refill route when appropriate. T-Mobile Prepaid is different from Metro by T-Mobile and Mint Mobile; use the brand shown on the account and SIM.

T-Mobile Home Internet and Fiber Support

For T-Mobile 5G Home Internet technical support, call 1-844-275-9310. For T-Mobile Fiber technical support, call 1-844-783-4237. Wireless Customer Care may not be the fastest route for a gateway, router, fiber or home-service problem.

Before contacting Internet support, restart the gateway or approved equipment, record indicator lights and error messages, check placement, test close to the gateway and note whether Ethernet and Wi-Fi are affected differently. Save speed-test results with the time and test device; a single result is less useful than several tests showing a pattern.

For cancellation, ask about the final billing date, any equipment-return requirement, return deadline, tracking method and confirmation that the Internet line is closed. Do not return equipment to a T-Mobile headquarters address unless T-Mobile gives written instructions.

T-Mobile for Business Customer Service

T-Mobile’s current Business contact page directs customers to dial 611 from a T-Mobile phone or call 1-855-984-3998 from any phone. Use Account Hub for supported billing, line, SIM, order and number-transfer tasks.

Business routing can depend on account size, billing platform, permissions and assigned account team. If the number on the invoice or Account Hub differs from the general Business line, use the account-specific route. Identify the billing account, affected lines, administrator permissions and business-impacting deadline when requesting escalation.

T-Mobile International Customer Service

When traveling outside the United States, call +1-505-998-3793. T-Mobile says calls to this number from a T-Mobile handset are free from roaming, airtime and long-distance charges. Calls from landlines or non-T-Mobile phones may incur international charges.

Before travel, verify whether the destination, cruise ship, airline or service is included in the plan and whether a pass is required. Save the international number in advance because U.S. toll-free numbers are not guaranteed to work from every country.

T-Mobile Cancellation, Final Bill and Number Transfer

If you want to keep your telephone number, begin the transfer with the new carrier while the T-Mobile line remains active. Canceling first can cause the number to be lost or require reactivation. Keep the account number, Number Transfer PIN and billing ZIP code private and provide them only through the verified new-carrier process.

Before canceling T-Mobile service, ask about:

• The effective cancellation and final billing dates
• Remaining device installment balances
• Promotion or trade-in credits that may stop
• Watch, tablet, hotspot and Internet lines that may remain active
• AutoPay and stored payment methods
• Gateway or other equipment returns
• Final bill delivery and account-access timing

If a device unlock is needed, review T-Mobile’s current eligibility policy before the line closes. Service cancellation, number transfer and device unlocking are separate actions.

T-Mobile Fraud, SIM Swap and Port-Out Protection

If you see an unauthorized line, device, order, SIM change or number transfer—or your phone unexpectedly shows no service—contact T-Mobile immediately through T-Life, 611 or 1-800-937-8997. Use another phone or secure internet connection if the affected device cannot connect.

1. Change the T-Mobile password and account PIN through an official route.
2. Review lines, devices, SIM changes, addresses and authorized users.
3. Ask T-Mobile to document the suspected account takeover, SIM swap or port-out.
4. Turn on available SIM Protection and Account Takeover Protection.
5. Secure the email account used for T-Mobile and other accounts that rely on the telephone number.
6. Contact affected financial providers through verified numbers if transactions or access may be at risk.
7. Save alerts, dates, case numbers and written confirmation of corrective action.

Scammers may impersonate T-Mobile sales, upgrade, rebate, fraud or collection teams. Do not trust a support number solely because it appears in an advertisement, text, comment or caller ID.

T-Mobile Customer Reviews and Complaints

The live CustomerServiceNumbers.com page currently shows 0 out of 5 stars based on 0 reviews. There is not yet enough CSN feedback to describe a current rating pattern or company-wide customer experience.

Useful T-Mobile reviews explain whether the issue involved wireless, prepaid, business, Home Internet or Fiber; the plan or device involved; the support route used; how many contacts were required; what resolution was promised; and whether the correction appeared on the account.

For additional company and complaint context, see:

• T-Mobile corporate office, headquarters and complaint information
• T-Mobile reviews and complaints on ZeroStars

How to Escalate a T-Mobile Complaint

1. Start with the responsible team. Separate wireless, prepaid, business, Home Internet and Fiber problems.
2. Describe one unresolved issue. State the affected line or service, date, disputed action and requested correction.
3. Provide evidence. Use bills, offer terms, trade-in tracking, speed tests, device records or fraud alerts that match the issue.
4. Request a case number. Record the representative, department, date and promised next step.
5. Ask for a supervisor or specialized team. Identify which earlier action remains incomplete.
6. Follow up through the same case. Avoid restarting the explanation with unrelated departments when possible.
7. Use written correspondence when appropriate. Send copies, not original documents, and never mail a device or payment to a general correspondence address.
8. Consider an outside complaint route. The FCC Consumer Complaint Center accepts complaints involving telephone, internet and related communications services.

T-Mobile Customer Relations mailing address:
T-Mobile Customer Relations
P.O. Box 37380
Albuquerque, NM 87176-7380

T-Mobile says not to send payments to this address. It is also not a device, trade-in, gateway or equipment-return destination. Keep proof of delivery for written correspondence.

T-Mobile Customer Service Frequently Asked Questions

What is the T-Mobile customer-service phone number?

Call 1-800-937-8997. From a T-Mobile phone, dial 611.

Is T-Mobile customer service available 24/7?

T-Mobile says support starts 24/7 in the T-Life app. Customer Care representatives are listed as available daily from 4:00 a.m. to 9:00 p.m. Pacific Time, and live-agent chat in T-Life is listed from 4:00 a.m. to 12:00 a.m. Pacific Time.

What is the T-Mobile Prepaid customer-service number?

Call 1-877-778-2106. For automated refills, call 1-877-720-5195 or dial *ADD from a T-Mobile device.

What is the T-Mobile Home Internet support number?

Call 1-844-275-9310 for 5G Home Internet technical support.

What is the T-Mobile Fiber support number?

Call 1-844-783-4237 for T-Mobile Fiber technical support.

What is the T-Mobile for Business customer-service number?

Dial 611 from a T-Mobile phone or call 1-855-984-3998 from any phone.

How do I contact T-Mobile from another country?

Call +1-505-998-3793. T-Mobile says calls from a T-Mobile handset to this number are free from roaming, airtime and long-distance charges.

How do I report a T-Mobile SIM swap or unauthorized number transfer?

Contact T-Mobile immediately through T-Life, 611 or 1-800-937-8997. Use another device if the affected line has lost service, then secure accounts that use the number for verification.

How do I set up a T-Mobile payment arrangement?

Eligible postpaid customers can use T-Life, My T-Mobile or the automated phone system. T-Mobile says the account must be less than 30 days past due to begin an arrangement.

Should I cancel T-Mobile before transferring my number?

No. Keep the line active while the new carrier completes the transfer. Canceling first can cause the number to be lost.

Where is T-Mobile headquartered?

T-Mobile US, Inc. is headquartered at 12920 SE 38th Street, Bellevue, Washington 98006. The corporate telephone number listed in company filings and on the related COH page is 1-425-378-4000. Routine account and device issues should begin with Customer Care.

Compare Other Wireless and Internet Customer Service Pages

• Verizon Wireless customer service
• AT&T Wireless customer service
• Metro by T-Mobile customer service
• Mint Mobile customer service
• Cricket Wireless customer service
• Boost Mobile customer service
• Spectrum customer service

Official T-Mobile Sources Checked

• T-Mobile contact page
• T-Mobile Customer Care and Team of Experts hours
• T-Mobile Support Center
• T-Mobile for Business contact information
• T-Mobile Internet customer service
• T-Mobile Prepaid refill support
• T-Mobile payment-arrangement requirements
• T-Mobile international-roaming checklist
• T-Mobile SIM and eSIM support
• T-Mobile account-fraud support
• T-Mobile SIM Protection
• T-Mobile Account Takeover Protection
• T-Mobile device-unlock policy

Why Trust CustomerServiceNumbers.com?

CustomerServiceNumbers.com has helped consumers locate customer-service information and share experiences since 2004. This page distinguishes T-Mobile wireless, prepaid, business, Home Internet, Fiber and international routes and records when the information was checked.

Share Your T-Mobile Customer Service Experience

Leave a review below explaining the service involved, the issue, the support route you used, how long resolution took, what T-Mobile promised and whether the final correction appeared on the account. Do not include private account, device, payment or identity information.

Customer Service Information Disclaimer

CustomerServiceNumbers.com is an independent consumer-help website and is not owned or operated by T-Mobile US, Inc., Deutsche Telekom AG, Metro by T-Mobile or Mint Mobile. Contact information, representative hours, plan terms, payment rules, promotions, device policies and support routes can change. Verify important instructions through T-Mobile’s official website, T-Life app, account documents or authorized support team. This page does not provide legal, financial, security or transaction-dispute advice.