Turn HD Voice On / Off - 3G Network Extender - Smartphone

Note Devices with Advanced Calling enabled will not connect to the Network Extender if there is 4G LTE signal available. In the event that your location has weak 4G LTE coverage that is causing dropped calls, you must disable Advanced Calling from your phone to permit it to connect to the Network Extender.

Note Notes:

  • These instructions disable HD Voice & Video calling functions.
  • Ensure Advanced calling is enabled after leaving Network Extender coverage to enjoy HD Voice and Video Calling.
  • The settings displayed vary slightly by device.
  • 4G Basic Phones cannot connect to the 3G Network Extender. 


Windows® Phone



  1. From a Home screen, navigate: Apps > Settings > Advanced Calling.
    Note For the Google Pixel, navigate: Apps > Settings > More > Cellular networks > Advanced Calling.
  2. Tap the Advanced Calling switch (located in the upper-right) to turn on or off.
  3. When turned on, tap either of the following to enable or disable:
    Note Enabled when a check mark is present.
    • HD Voice
    • Video Calling





  1. From the Home screen, navigate: Settings > Cellular.
  2. Ensure that Cellular Data is turned on.
  3. Tap Cellular Data Options.
  4. Tap Enable LTE then tap Voice & Data to enable or disable.
    Note Enabled when a check mark is present.
    Note When checked, voice calls between compatible devices is carried over the 4G LTE data network.




Windows Phone

  1. Swipe the screen left to display the Apps list.
    Note Alternatively, tap All apps (located in the lower-right, may require scrolling).
  2. Tap Settings.
  3. Tap cellular+SIM.
  4. Tap SIM settings.
  5. Tap the Advanced Calling switch to turn on or off.