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What is Wi-Fi calling, and how do I turn it on?

What Wi-Fi calling does, how to switch it on and what it costs.

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Short answer

Wi-Fi calling lets your phone make and receive normal calls over Wi-Fi when the mobile signal is weak, and you switch it on in the phone's settings. On an iPhone, Apple's path is Settings, Cellular, Wi-Fi Calling, then Enable. Your operator must support it, and Telenor began rolling it out in 2016 under the name WiFi Voice.

VoWiFi and VoLTE in Norway a smartphone with a signal icon and a small SIM card, a Wi-Fi symbol above a fjord outline

Why

  1. Apple describes Wi-Fi Calling as a way to make or receive a voice call when you have Wi-Fi but little or no mobile coverage.
  2. Telenor began rolling out WiFi Voice in June 2016 and said the service was included in the mobile subscription, with no app to download.
  3. Apple notes that if Wi-Fi Calling is on and there is no mobile service, emergency calls might go over Wi-Fi Calling.

Details

According to Telenor, calls over Wi-Fi use your normal call allowance, just like other calls. On Android phones the menu names differ between manufacturers, so look for Wi-Fi calling in the phone or network settings. If the switch is missing, Apple advises checking that your operator offers the service and that the phone has the latest software.

Tip

Turn on Wi-Fi calling at home if your flat or cabin has weak mobile coverage but a stable Wi-Fi network.

What may differ

With a foreign SIM card, your home operator decides whether Wi-Fi calling works abroad and what it costs. T-Mobile in the US, for example, says there is no charge for Wi-Fi calls from abroad to the US, Canada or Mexico.

People also ask

  • What is Wi-Fi voice?
  • How do I make calls over Wi-Fi?

Sources

This answer is for reference only. Services can change, so check your operator before you rely on Wi-Fi calling.

VoWiFi and VoLTE in Norway

  • How much mobile data do I need for a trip to Norway?

    How much mobile data you need in Norway depends mostly on video, since one hour of Netflix in HD can use up to 3 GB.

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  • Does BankID work without a Norwegian SIM card?

    Yes, the BankID app works without a Norwegian SIM card and can be activated with a phone number from many countries, as long as your Norwegian bank has that number.

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  • How fast is the internet in Norway?

    Fixed internet in Norway averaged a download speed of 167 Mbit/s in 2025, according to Nkom's Nettfart measurements, and over 96 percent of households can get gigabit broadband.

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  • Is there Wi-Fi on trains, buses and ferries in Norway?

    Vy offers free Wi-Fi on its regional trains and most local trains, Vy Express has free Wi-Fi on most buses, and Hurtigruten has free Wi-Fi on all its ships.

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