Want a super-fast way to check your T-Mobile balance, see data usage, manage call forwarding, or access hidden phone info without opening an app or website? **T-Mobile USSD codes** (also known as short codes, quick codes, star codes, or pound codes) are your answer! These simple commands dialed directly into your phone provide instant access to network services.
This guide provides the most **comprehensive and up-to-date T-Mobile USSD codes list** for 2025. Find codes to check your balance, data, minutes, manage calls, reset voicemail, find your IMEI, and discover useful “secret” T-Mobile codes.
Quick Access: Most Popular T-Mobile USSD Codes
In a hurry? Here are the codes people search for most often:
- Check Account Balance: Dial #BAL# (#225#)
- Check Data Usage: Dial #WEB# (#932#)
- Check Minute Usage: Dial #MIN# (#646#)
- Check Message Usage (Postpaid): Dial #MSG# (#674#)
- Make a Payment: Dial *PAY (*729)
- See Your Own Phone Number: Dial #NUM# (#686#)
- Access Voicemail: Dial and hold 1 or dial *86
- Display IMEI: Dial *#06#
- Turn ON Scam Block: Dial #ONB# (#662#)
- Turn OFF Scam Block: Dial #OFB# (#632#)
- Report Spam Texts: Forward spam SMS to 7726 (SPAM) (Note: This is an SMS short code, not USSD)
Understanding T-Mobile Codes: USSD vs. SMS Short Codes
It’s crucial to know the difference:
- USSD Codes (Dialer Codes): Start with * or #, end with # (e.g., #225#). Dialed in your phone app like making a call. Used for real-time network commands (balance check, feature management). Work without internet. This is what this list focuses on.
- SMS Short Codes (Texting Codes): 5-6 digit numbers (e.g., 7726, bank codes). Used for sending/receiving text messages with businesses/services via your Messages app. If you’re having trouble receiving these, see our guide on fixing blocked short code SMS.
People also use terms like “T-Mobile star codes,” “pound codes,” “quick codes,” “dial codes,” or even “T-Mobile secret codes” when referring to USSD codes.
The Complete T-Mobile USSD Codes List (Organized by Function)
Here’s the detailed breakdown of useful T-Mobile dialer codes:
Essential Account, Billing & Device Codes
| Code to Dial | Alphanumeric | Function/Description |
|---|---|---|
| #225# | #BAL# | Checks current account balance and last payment info. Shows service cycle date for prepaid. |
| #932# | #WEB# | Checks data usage for the current billing cycle, plan details, and expiration. (Official t mobile data check code) |
| #646# | #MIN# | Displays voice minutes used in the current cycle. |
| #674# | #MSG# | Shows SMS/MMS message count for the current cycle (Postpaid only). |
| *729 | *PAY | Connects to the automated system to make a payment. |
| #686# | #NUM# | Displays your own T-Mobile phone number on screen. |
| #793# | #PWD# | Initiates a reset of your voicemail password. (t mobile voicemail reset quick code) |
| #796# | #PWO# | Turns the voicemail password requirement ON or OFF. |
| *#06# | N/A | Displays the device’s unique 15-digit IMEI number (Universal code). |
Call Management Codes (Forwarding, Waiting, Caller ID)
| Code to Dial | Function |
|---|---|
| **21*1+PhoneNumber# | Turn ON Unconditional Call Forwarding (all calls). |
| ##21# | Turn OFF Unconditional Call Forwarding. |
| **61*1+PhoneNumber# | Turn ON Call Forwarding on No Reply. |
| ##61# | Turn OFF Call Forwarding on No Reply. |
| **62*1+PhoneNumber# | Turn ON Call Forwarding When Unreachable (Phone Off/No Signal). |
| ##62# | Turn OFF Call Forwarding When Unreachable. |
| **67*1+PhoneNumber# | Turn ON Call Forwarding When Busy. |
| ##67# | Turn OFF Call Forwarding When Busy. |
| ##004# | Deactivate ALL conditional call forwarding (No Reply, Unreachable, Busy). |
| *43# | Turn ON Call Waiting. |
| #43# | Turn OFF Call Waiting. |
| *67+1+PhoneNumber | Block Caller ID for the next single outgoing call. |
| *82+1+PhoneNumber | Show Caller ID for the next single outgoing call (if usually blocked). |
(Note: For call forwarding codes, replace “PhoneNumber” with the full 10-digit number you want to forward calls to.)
Scam ID & Scam Block Codes (Scam Shield)
| Code to Dial | Alphanumeric | Function |
|---|---|---|
| #664# | #ONI# | Turn ON Scam ID (Identifies “Scam Likely” calls). |
| #634# | #OFI# | Turn OFF Scam ID. |
| #662# | #ONB# | Turn ON Scam Block (Blocks most “Scam Likely” calls). |
| #632# | #OFB# | Turn OFF Scam Block. |
| #787# | #STS# | Check the current status (ON/OFF) of Scam Block. |
International Roaming Codes
| Code to Dial | Alphanumeric | Function |
|---|---|---|
| #766# | #RON# | Turn ON International Data Roaming. |
| #763# | #ROF# | Turn OFF International Data Roaming. |
T-Mobile Prepaid Specific Codes
- #999#: Check prepaid account monetary balance and minutes.
- *ADD (*233): Call to add funds (refill) to your prepaid account.
- #MEX# (#639#): Check minute balance for Mexico calling add-on.
Device Diagnostic / “Secret” Codes (Use with Caution)
- *#06#: (Safe) Displays IMEI.
- *#*#4636#*#*: (Android Only) Opens a hidden testing menu with Phone Info, Battery Stats, Usage Stats. Useful for checking network details.
- Manufacturer Codes (e.g., Samsung *#0*#): Often disabled by T-Mobile on their branded devices.
Debunking Common Myths About T-Mobile Codes
- Free Service/Signal Boost: No USSD code gives free service or improves signal (use Field Test/4636 menu to *find* better signal spots). The old
*228code is **dangerous** on modern phones – do NOT use it. - Hacking/Tapping Check: Codes like `*#21#` only check standard call forwarding status (usually your voicemail), they do not detect hacking.
Troubleshooting “Connection Problem or Invalid MMI Code” Error
Getting this error when dialing a T-Mobile USSD code? Try these fixes:
- Re-enter Code Carefully:** Check for typos.
- Toggle Airplane Mode:** Turn On for 30s, then Off.
- Restart Your Phone:** Solves many temporary glitches.
- Add a Comma:** Try adding a comma at the end (e.g., `#225#,`). Long-press the * key.
- Reset Network Settings:** (Last resort) Go to phone Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth. This erases saved Wi-Fi/Bluetooth connections.
Alternatives: T-Life App & Website
While these T-Mobile dial codes are fast and work offline, the **T-Life app** and **My T-Mobile website** offer a visual way to manage most account functions. However, many users prefer the speed and reliability of USSD codes, especially if the app is slow or unavailable.
Conclusion
This comprehensive **T-Mobile USSD codes list** provides powerful shortcuts to manage your account and phone features directly from your dialer. Understanding the difference between USSD and SMS codes, and knowing how to troubleshoot basic errors, allows you to use these “quick codes” effectively. Keep this guide handy to make managing your T-Mobile service faster and easier!
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