User's Manual

Changing Your Settings 253
Note: This feature is active by default. If you are in an active
Wi-Fi call and go out of range of your Wi-Fi, the call will
be dropped.
Note: To avoid international data roaming fees when using
Wi-Fi calling when outside the United States, the Data
Roaming feature on your device must be turned off.
Note: With certain rate plans, minutes used while connected
to the Wi-Fi network count against available rate plan
minutes.
Important! If you are not using a new ISIM card, you will
receive an
Error: ERxx Invalid SIM message. You
must be using a new ISIM card to use this feature.
Activating Wi-Fi Calling
1. Ensure that the Wi-Fi connected icon displays on
the Status Bar.
• If prompted with an on-screen “Did you know your phone can
make calls over Wi-Fi” popup, tap
Learn and follow the
remaining on-screen instructions. Tap
Next ➔ Done .
2. From the main Settings page, tap Connections tab ➔
More networks .
3. Locate the
Wi-Fi Calling field and in a single motion
touch and slide to the right to turn it on.
4. If (
Missing 911 Address ) displays in the Status
Bar, follow these steps to provide 911 an address for
emergency situations:
• Log into my.t-mobile.com .
• Click on Profile and edit the Edit customer information .
• Enter your emergency location information and complete the
online registration.
5. From the main Settings page, tap Connections tab ➔
More networks ➔ Wi-Fi Calling .
OFF
OFF