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T-Mobile USA USSD Codes:

Most codes should be universal for T-mobile customers, very few are limited to post-paid or pre-paid.

Supported Short Codes for Postpaid Customers

Title - Co﻿de to Dial - Description

Display T-Mobile Phone Number #NUM# or #686#

Shows you your T-Mobile phone number. You can even perform this while using your device.

Reset Voicemail Password	#PWD# or #793#	Resets your voicemail password to the last 4 digits of your T-Mobile mobile number.

Turn On / Off Voicemail Password	#PWO# or #796#	Turns your voicemail password on or off.

CallerTunes	*TUNE	Allows you to manage your CallerTunes from your device.

Disable Roaming #ROF# or #763# Disables international data roaming capability on your device.

Enable Roaming #RON# or #766# Enables international data roaming capability on your device.

Family Allowance	#326#	Displays your Used/Limit or No Limit for Minutes, Messages, and Downloads if you subscribe to Family Allowances.

Display IMEI	*#06#	Displays your device's IMEI number.

Software Version	*#9999#	Shows the System Version for Motorola and Samsung Equipment.

Software Version	*#0000#	Shows the System Version for Nokia Equipment.

Turn On / Off Caller ID	#31#	Turn on or off your outbound Caller ID. You can also block your outbound Caller ID information on a per call basis by dialing #31# followed by your phone number.

Allows Outgoing Caller ID	*31#PhoneNumber	Allows your outgoing Caller ID to display on a per call basis if your device is set to block your Caller ID for all outgoing calls.

Check Caller ID Status	*#31#	Sends your device a message indicating if your outboud Caller ID is et to display or not display.

Call Customer Care	611	Calls our Customer Care line, open 24 hours 7 Days a week for your convenience.

Call Smart Access Customer Care	*777	Calls our Smart Access Customer Care line, open 7 days a week from 8 a.m. to 4 p.m. PT.

Send to My Album	222	Send your photos to this number via picture message to save them to your My Album. View them at T-MobilePictures.com.

Call Voice Mail	123	Calls your voicemail box so you can manage new and saved messages. Note: Calls made to Voicemail from a T-Mobile device are deducted from your appropriate Whenever, Weekend, or Night buckets. Once your rate plan bucket minutes have been exhausted, standard overage charges apply.

Taxi Service	#TAXI	Automatically dials an operator to help you locate a local taxi service. Note: Each use of #TAXI charges your T-Mobile Bill $1.75.

Supported Short Codes for No Annual Contract Customers

Short Code - Code to Dial - Description

*8646	*8646	Call Customer Service

*ADD	*233	Call Refill Center

#NUM#	#686#	Display your T-Mobile number

*NUM	*686	Display your T-Mobile number

#BAL#	#225#	Check your account balance

#999#	#999#	Display your account balance in minutes and dollars

#PWD#	#793#	Reset your voicemail passcode to the last four digits of

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your phone number

#PWO#	#796#	Turn your voicemail passcode on or off

#WEB#	#932#	Monthly4G customers who have a data plan can check

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the following: Data used, Current rate plan, Current plan

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expiration date

Source : Google Search "tmobile USSD codes" - http://support.t-mobile.com/docs/DOC-4041 and http://support.t-mobile.com/docs/DOC-4051