Wi-Fi Calling

Wi-Fi Calling
355 reviews
Sign in to see if this app is available for your phone.


T-Mobile USA

Download size

< 1 MB

Last updated



Works with

  • Windows Phone 8.1
  • Windows Phone 8

App requires

  • data services
  • push notification service
  • movement and directional sensor
  • web browser component
  • HD720P (720x1280)
  • WVGA (480x800)
  • WXGA (768x1280)
What's this?

Supported languages (1)

show languages
T-Mobile’s Wi-Fi Calling is an integrated feature on T-Mobile phones that allows you to make and receive calls or texts over an available Wi-Fi network. You can call anyone regardless of what device or service they are using. You will also retrieve voicemails and messages in the same inbox as your cellular calls and texts. Included with T-Mobile service.
show details


  • by Trambak 5/18/2015
    App is not working for windows phone 8.1; useless app.. Saying unable to connect.
  • by Antawan 5/13/2015
    With WP 8.1 upgrade, the app stopped working and post error code REG90.
  • by Dulcis 5/12/2015
    Took a few visits to metro pcs stores but finally got it working! First they added the 911 address, but it still didn't work, so eventually SOMEONE figured out that they needed to send some kind of update signal to my phone sim card which took 2 hours, then I had to power off and power on my phone and AT LAST it works! Worth it. Lumia 521 with 8.1 update.
  • by jason 5/12/2015
    Can't use it for some reason it won't work
  • by Dustin 5/8/2015
    I don't want this. I disabled Wi-Fi calling and uninstalled this app, only to have Wi-Fi calling return to my phone. Wi-Fi calling drops the call, if you lose connectivity, which happens at my house. I want it gone and T-Mobile doesn't really make that viable. Reinstalled, into I can get back to a better network.
  • by Amy 4/27/2015
    I would give this app zero stars if it would let me. It keeps giving me a Reg09 error indicating it is missing a 911 address. This app has never worked on my Nokia 521.
  • by deshawn 4/21/2015
    This app sucks
  • by Robert 4/15/2015
    Good *****!!
  • by Duyen 4/12/2015
    Why i can´t turn off wifi calling in my phone?
  • by Bria 4/10/2015
    It doesn't work anymore!