If you’re a T-Mobile customer, you can use your phone to make calls and texts almost anywhere there’s Wi-Fi just by connecting your phone to a Wi-Fi network. No additional apps are required, and it’s included in your plan.
Capable device required; may decrement plan minutes. Not compatible with TTY devices at this time (including calls to 911). More info. Most devices will not transition between Wi-Fi and the wireless network. See your device’s User Manual and selected service for details.