e911 troubleshooting for Wi-Fi Calling

    Learn how to troubleshoot Wi-Fi Calling e911 problems. If you have not added an e911 address to your My T-Mobile account, you will see the error 'REG09: Missing 911 address' when you try to use Wi-Fi Calling.


    When you dial 911 using Wi-Fi Calling, your location may not be automatically provided to the dispatcher. To help save time in the event of an emergency, you will not be able make and receive Wi-Fi calls until an e911 address is provided.


    Update your e911 address


    To add an e911 address:


    1. Open the T-Mobile My Account app.
    2. Tap Account info.
    3. Tap Settings.
    4. Tap 911 Address.
    5. Enter your home address.
    6. Tap Continue.

      Note: Allow up to one hour for the e911 address to update.