Wi-Fi Calling: calling over Wi-Fi

With Wi-Fi Calling, you can make calls on any Wi-Fi in the world, whether in your home, hotel or office.

You simply use the included services of your subscription as if you were in Switzerland. No roaming fees and no app. We recommend using Wi-Fi Calling especially when the mobile network coverage is not optimal, for example indoors.

All you need is a mobile phone that supports this function, then, you can activate Wi-Fi Calling once on the device. To ensure that the phone does not connect to the mobile network, we recommend turning on flight mode first and then activating Wi-Fi.

*Exception: If your subscription includes roaming calls but no international calls (from Switzerland to abroad), and you make a Wi-Fi Calling (VoWiFi) call from abroad, it will be charged as an international call. In this case, it is recommended to make your call via the mobile network. 

No additional costs

No additional costs

The function Wi-Fi Calling is completely free and also works with Prepaid contracts.

No roaming fees

No roaming fees*

For incoming and outgoing calls and SMS, you use the included services of your subscription as if you were calling within Switzerland.



Your smartphone searches automatically for the best Wi-Fi network for your calls.

Quite simple

Quite simple without an app

Neither you nor the person you are calling needs to install an app. Wi-Fi Calling works with all mobile and landline numbers worldwide.

No data usage

No data usage

As you are connected via Wi-Fi, you don't use any data volume.