How to Activate T Mobile Voice Mail

Voicemail is automatically included with your T-Mobile cell phone plan and will enable callers to leave messages for you if you are unable to answer your phone. To activate your voicemail, press and hold the “1” key to dial your voicemail and follow the prompts on your phone to enter a security code and setup a greeting. You can change your greeting later if you want, by dialing your voicemail and pressing “*”, “3”, and “2” to record a new one. The activation only needs to be performed once to begin receiving voicemail.

Activating Your Voicemail

Press and hold the “1” key on your T-Mobile phone.

This will automatically dial the voicemail number for your account.

  • If this method does not work, you can also dial “123” from your handset to access the voicemail servers.

Enter your security code when prompted.

By default, the password is set to the last four digits of your mobile number.

Enter a new security code for your voicemail when prompted.

The security code can be 4-7 digits long. You will need to enter this code any time you call your voicemail, so make sure it is memorable.

  • You can also disable the security code prompt when you call your voicemail from your phone by dialing #PWO# (#796#), and pressing send.

Record your personal voicemail greeting when prompted.

Your personal greeting is what the caller hears when they are sent to your voicemail. Press “#” when you are finished recording and it will be played back for you to for confirmation.

  • If you want, you can also opt to skip this step and use a standard greeting

Test your voicemail.

Make a test call to your number from another cell phone or landline phone to determine if you have successfully activated your T-Mobile voicemail.

Changing Your VoiceMail Greeting

Press and hold the “1” key on your mobile phone.

You will automatically be connected to your voicemail.

Press the “*” key at the main menu.

This will take you to a list of mailbox settings.

Press the “3” key.

This will take you to Greetings menu.

Press the “2” key.

This will allow you to record a new greeting. Your current greeting will play before you record your new one.

Record your new greeting.

Wait for the prompt to begin recording and then speak clearly into the microphone.

Press “#” to finish recording.

Your new recording will playback for you.

  • If you are unsatisfied, you can press “2” again to record a new one.

Press “1” to confirm the new greeting.

Your greeting will be set and you will be taken back to the menu.


Check your phone’s signal.

Dialing voicemail requires cell signal like any other call. If reception is poor you may have trouble connecting to your mailbox.

Test alternate voicemail contacts.

If you are having trouble connecting to your voicemail by pressing and holding “1”, you can also dial “123” or “1-805-637-7249”.

  • If these methods work, but holding “1” does not, then your voicemail feature may have been set up incorrectly by T-Mobile and you should contact them for support.

Dial “##004#” to reset call forwarding.

If you find that unanswered calls aren’t being redirected to your voicemail, you can enter this button combo and press “Send” to reset forwarding.

  • Your phone may need to be reset for the changes to take effect.

Delete text messages if you are not receiving voicemail notifications.

If text messaging is functioning and your phone is up to date, you can try to delete all of your text messages, then reset your phone. Leave a test voicemail to check that notifications are now working.


  • If you forget your security code for your voice mail and want to reset it back to the default last 4 digits of your telephone number, dial #PWD# (#793#), and press “send.”
  • If you do not wish to use voicemail on your phone anymore for any reason, you can call customer service and elect to have this feature disabled from your account.
  • Calls made to your voicemail account use up minutes like any other call on the network.

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