These steps will demonstrate how to enable and use WiFi Calling on a smartphone to make a voice call.  With Wi-Fi Calling, you can make or receive a phone call if you have a Wi-Fi connection in an area with little or no cellular coverage.


  • WiFi is turned On
  • An active wireless Internet connection - WiFi calling works best when connected to eduroam
  • A WiFi-Calling compatible device with appropriate settings enabled - depends on device manufacturer, OS, and cellular service carrier
    • See suggested troubleshooting steps for guidance below
    • You might need to enter or confirm your address for emergency services.
    • Some devices or cellular carriers may not support WiFi Calling
  • In some cases an active cellular network signal is required to turn on the WiFi Calling, (only afterward it is not needed), and you may need to move to a different physical location to complete this process


iPhone (iOS)

Make a call with Wi-Fi Calling

  1. Turn on Wi-Fi calling in Settings > Phone (or Cellular) > Wi-Fi Calling. You might need to enter or confirm your address for emergency services.
  2. If Wi-Fi Calling is available, you’ll see Wi-Fi after your carrier name in the status bar. Then your calls will use Wi-Fi Calling.


If in the Settings app - 

  1. Pull down the notification shade and long-press the Wi-Fi icon to enter Wi-Fi settings.
  2. Scroll to the bottom and select Wi-Fi Preferences.
  3. Tap Advanced.
  4. Select Wi-Fi Calling and flip the switch to On.


If in the Phone app - 

  1. Enter the Phone app
  2. Click the “3 vertical dots” menu in top right corner and then tap Settings
  3. Toggle the WiFi Calling setting to On.

Verizon Troubleshooting:

How to Make Wi-Fi Calls on Android™ Smartphones 

HD Voice FAQs - Enable HD Voice

Hands-On Interactive Simulator - step-by-step tutorial by phone model

AT&T Troubleshooting:

Stay Connected with WiFi Calling

Device Selector Tool - step-by-step tutorial by phone model

WiFi Calling Setup FAQ

T-Mobile Troubleshooting:

T-Mobile WiFi Calling FAQs

Android Troubleshooting: 

How to Enable Wi-Fi Calling on an Android Phone

Ask for Help

If you are unable to find the information you need in the documentation available online, the ITS Service Desk is available to assist.