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Official T-Mobile Customer Support
1-800-866-2453 Wireless, home internet & T-Mobile services
schedule 24/7 Support Available — Available 24/7
verifiedVerified Official blockNo Hidden Fees access_time_filled24/7 Support
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Business / Alternate Line
1-844-275-9310 T-Mobile for Business
Support available via: PhoneLive Chat24/7 SupportIn-StoreT-Life App
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About T-Mobile US, Inc.
T-Mobile US is headquartered in Bellevue, WA, and is the third-largest wireless carrier in the United States. T-Mobile acquired Sprint in 2020, making it one of the largest telecom mergers in US history. T-Mobile's 5G network is widely recognized as the fastest and most extensive in the nation. T-Mobile Home Internet uses 5G/LTE to deliver home broadband in rural and suburban areas where cable is unavailable. T-Mobile also owns the Metro by T-Mobile prepaid brand.
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When to Call T-Mobile Support
These situations typically require speaking with a T-Mobile representative directly.
- check_circle Your T-Mobile phone has no service in an area that should have 5G or LTE coverage
- check_circle You've received a bill with unexpected charges that need to be reviewed
- check_circle Your T-Mobile Home Internet gateway has a red light or no internet
- check_circle You need to port your number to or from T-Mobile
cell_tower T-Mobile Products & Devices Covered
This support number handles service and technical support for the following T-Mobile products.
cell_tower T-Mobile wireless smartphones & plans
cell_tower T-Mobile Home Internet gateway (5G)
cell_tower T-Mobile Wi-Fi calling
cell_tower T-Mobile DIGITS multi-device service
cell_tower T-Mobile SyncUP DRIVE GPS tracker
cell_tower T-Mobile prepaid devices
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Common T-Mobile Issues
The most-reported T-Mobile problems and what to expect when you call for each.
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No wireless signal
T-Mobile phone shows no service or cannot make calls
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5G not showing despite 5G area
Phone shows 4G or LTE in an area advertised for 5G coverage
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T-Mobile Home Internet offline
Home Internet gateway shows red light or no internet
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Number port not completing
Number transfer to or from T-Mobile stuck or failing
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Bill higher than expected
T-Mobile bill has unexpected charges or fees
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Fix It Yourself
Try these steps before calling. They resolve the majority of common T-Mobile issues.
1
Reset network settings for persistent signal issues
On iPhone: Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings. On Android: Settings → General Management → Reset → Reset Network Settings. This clears all stored network preferences and often fixes stubborn T-Mobile signal issues.
2
Check T-Mobile's coverage map for your specific address
Visit t-mobile.com/coverage and type your exact address (not just your city) to see the expected 5G, LTE, and Extended Range LTE coverage. Indoor vs. outdoor coverage differs significantly in many areas — the map shows both layers.
3
Use T-Life app for bill management and support
The T-Life (formerly T-Mobile) app provides real-time bill breakdown, usage tracking, plan changes, troubleshooting diagnostics, and 24/7 chat support — often resolving billing and account issues faster than calling during business hours.
shield Warranty & Coverage
T-Mobile phones sold by T-Mobile include a 1-year manufacturer warranty. T-Mobile Protection 360 adds accidental damage coverage, screen protection, and next-day device replacement for a monthly fee.
quiz T-Mobile FAQ
Common questions answered by our research team.
add Is T-Mobile's 5G really the fastest in the USA?
Multiple independent tests by PCMag, Opensignal, and Ookla consistently rank T-Mobile #1 in 5G speed and coverage. T-Mobile's mid-band 5G (2.5 GHz spectrum acquired through Sprint) provides the best combination of speed and coverage.
add What is T-Mobile Home Internet?
T-Mobile Home Internet ($50/month) uses 5G or LTE cellular signal to deliver home broadband via a gateway device (no cable or DSL line needed). Speeds average 100-300 Mbps in most areas. Available where T-Mobile's network is strong — check availability at t-mobile.com/isp.
add Does T-Mobile work internationally?
T-Mobile's Magenta and higher plans include free international texting and data (2G speeds) in 215+ countries, plus discounted calling rates. T-Mobile Magenta Plus adds international data at LTE speeds in 11 countries and better calling rates in 30+ countries.
add What is T-Mobile's Price Lock?
T-Mobile's Price Lock guarantee promises that your monthly rate will never increase as long as you remain a customer on eligible Rate Lock plans. This applies to your base service cost — not equipment payments or taxes.
add How do I transfer my number to T-Mobile?
Don't cancel your current service before porting your number — this causes you to lose the number. When activating T-Mobile service, provide your current account number and PIN/passcode from your old carrier. T-Mobile handles the port transfer, which typically completes within 4 hours.
business_center T-Mobile Business Support
T-Mobile for Business offers dedicated wireless and home internet solutions for small to enterprise businesses with account management and priority business support.
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Business Line: 1-844-275-9310