Step-by-step instructions to set up call forwarding on T-Mobile US. GSM codes, T-Mobile app settings, 611 hotline, and troubleshooting tips.
T-Mobile is the second-largest wireless carrier in the United States, with over 100 million subscribers on its nationwide 5G network. The good news for call forwarding: T-Mobile fully supports standard GSM codes, which makes setup quick and predictable.
Whether you want to redirect all calls or just the ones you miss, here is exactly how to do it on T-Mobile.
GSM Forwarding Codes for T-Mobile
T-Mobile uses standard GSM codes. Open your phone’s dialer and enter these, replacing [number] with the full destination number including country code (e.g., +14155551234).
Forward All Calls (Unconditional)
Activate: **21*[number]#
Deactivate: ##21#
Check: *#21#Your phone will not ring at all. Every incoming call goes straight to the destination.
Forward When No Answer
Activate: **61*[number]**[seconds]#
Deactivate: ##61#
Check: *#61#Replace [seconds] with how long your phone should ring before forwarding: 5, 10, 15, 20, 25, or 30. Most people pick 15 or 20.
Forward When Busy
Activate: **67*[number]#
Deactivate: ##67#
Check: *#67#Forward When Unreachable
Activate: **62*[number]#
Deactivate: ##62#
Check: *#62#Cancel All Forwarding
##002#This removes every forwarding rule at once.
Setting Up via the T-Mobile App
If you prefer not to type dial codes, the T-Mobile app offers forwarding management:
- Open the T-Mobile app on your phone
- Sign in to your account
- Navigate to Account > Line Settings
- Select the line you want to configure
- Tap Call Forwarding and enter the destination number
- Save your changes
You can also manage forwarding through your online account at my.t-mobile.com under Account > Line Settings.
For help over the phone, dial 611 from your T-Mobile device or call 1-800-937-8997 from any phone.
Things to Know About T-Mobile Forwarding
- Standard GSM codes work perfectly. Unlike AT&T or Verizon, T-Mobile does not use proprietary
*72/*73codes for unconditional forwarding. The standard**21*code works. - Forwarded calls may count as minutes. On older plans without unlimited calling, forwarded calls can count against your allotted minutes. Most current T-Mobile plans include unlimited domestic calls, so this is usually not an issue.
- International forwarding costs extra. If you forward calls to an international number, T-Mobile treats the forwarded leg as an international call. Check your plan’s international rates first.
- Wi-Fi Calling does not affect GSM codes. You can set up forwarding whether you are on cellular or Wi-Fi Calling. However, you need to dial the GSM codes from a cellular connection.
- Visual Voicemail might conflict. If you are forwarding to a third-party number and calls still hit T-Mobile voicemail, disable Visual Voicemail in your phone’s settings or call 611 to have it removed from your line.
Try It Interactively
Not sure which code to use? Our interactive call forwarding tool generates the exact code for your carrier and forwarding type. Just pick T-Mobile, choose your scenario, enter your destination number, and copy the code.
