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Wi-Fi Calling lets you call or text on Wi-Fi networks with your T-Mobile phone number, extending your coverage and keeping you connected! Be aware these details are only for T-Mobile Wi-Fi Calling. Calling and messaging from other apps (Skype, WhatsApp, Google Voice, etc.) may work over Wi-Fi or cellular data, but you must contact the app developer for help or billing.

Set up Wi-Fi Calling

To use T-Mobile Wi-Fi Calling, you need:

  • E911 address: Before you can use Wi-Fi Calling, you need to set up an e911 address on your account in case your location doesn't show up automatically to a 911 dispatcher. Learn how to set up your E911 address.
  • Active account: The service connects through T-Mobile service and uses your phone number, so your account must be active.
  • Phone that supports T-Mobile Wi-Fi Calling:
    • Wi-Fi Calling is included on most T-Mobile devices. Check the Devices​ page to look up your phone.
    • Some manufacturers state their devices have T-Mobile Wi-Fi Calling. Most of these devices work without any problems, but T-Mobile cannot guarantee their service unless you bought the device from us.
  • Wi-Fi Internet access: You must be able to use the internet on a Wi-Fi network.

    • Requires a minimum of 2 Mbps for upload and download speeds.
    • Satellite Internet and cell phone hotspot are not supported.
    • For detailed requirements, see: Wi-Fi Calling on a corporate network.

To set up T-Mobile Wi-Fi Calling on your device, open the Devices ​page, select your device, and use the help there.


Billing for Wi-Fi calls and messages

Wi-Fi calling actions and their resulting bill charges
What you're doing What you're charged on Wi-Fi Calling
  • Receiving any calls or messages
  • Calling to U.S.* phone numbers
  • Sending messages to U.S.* phone numbers

If you have an unlimited plan:

  • Any incoming calls: No fees
  • Any incoming messages: No fees
  • Outgoing calls and messages that you make to U.S. phone numbers: No fees

If you have a plan without unlimited, calls and messages count against your plan limits.

Calling to international (non-U.S.*) phone numbers

When you're in the U.S.

Wi-Fi calls placed to other countries are subject to your plan's long-distance charges. Check stateside international rates for long-distance fees.

When you're outside the U.S. (international roaming)

If you have an unlimited plan:

  • When in a Simple Global country​, calls are $0.25/min for roaming (same as cellular).
  • When on a cruise ship/ferry network, airline (in-flight) network, or any countries not on the Simple Global list, calls are charged World Class rates.

If you don't have an unlimited plan, calls to other countries are charged at World Class Calling rates.

Sending messages to international (non-U.S.*) phone numbers

When you're in the U.S.

Messages sent while connected to Wi-Fi Calling are subject to your plan's long-distance charges. Check stateside international rates​ for long-distance fees.

When you're outside the U.S. (international roaming)

When in a Simple Global country​, messages are not charged for roaming.

When on a cruise ship/ferry network, airline (in-flight) network, or any countries not on the Simple Global list, sending messages to any countries not on Simple Global costs $0.50 for roaming.

Data or Internet usage Nothing. Data usage over Wi-Fi doesn't use the T-Mobile network. We don't see it or charge for it.
Connecting through a VPN

A Virtual Private Network (VPN) connects you securely to a network of other computers. While connected, your Internet usage goes through that network, wherever it's located.

When VPN connects your device to another country for the first time, you'll receive a standard Welcome SMS, and you must enable data by dialing #RON#. Even if you're in the U.S. or a Simple Global country, you may be charged World Class rates.

*Or home area, if your plan includes calls and messages to Canada and Mexico.


Prevent unexpected charges when traveling abroad

Be warned... if your Wi-Fi connection drops for a moment or you move outside its range, your calls may switch to cellular networks. This means unexpected charges if you're in another country.

To avoid accidental charges:

  • Make sure your device shows a Wi-Fi Calling icon in its status bar before making calls or sending messages.
  • Try one of the following, if your device supports it:
    • Set Wi-Fi Calling to handle all calls, which will turn off the device's cellular connection. See device common procedures for Wi-Fi Calling, and look for the Wi-Fi only or Never use Cellular Network setting.
    • Set Airplane mode to on, then turn on Wi-Fi and Wi-Fi Calling.
    • Turn off roaming data in device settings. For more information, see International roaming services. (May still allow some types of data, as designed by your device manufacturer.)
  • You will lose service when moving out of the Wi-Fi range.
  • This does not prevent charges from international VPN networks and VPN connections. See Billing for details.


Watch a demo video!

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