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WiFi Calling can only be used with Wi-Fi networks within Switzerland. Roaming is not currently possible.

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No, emergency calls to 112, 117, 118, 143, 144, 148 are not possible with WiFi Calling. The mobile phone will automatically switch to the mobile network when an emergency number is dialled, if there is reception. In an emergency, use the fixed network or mobile network.

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Turn on Wi-Fi Calling in Settings–>Call Settings–>Wi-Fi Calling. To do this, you must have the most current system software installed on your device.

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Turn on Wi-Fi calling in Settings > Phone > WiFi Calling. The requirement for WiFi Calling is an iPhone 5 or newer, plus at least iOS 11.2

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iPhone: «Wi-Fi» is shown in the notification bar

Samsung Galaxy S8/S8+: The Wi-Fi Calling indicator (telephone receiver combined with Wi-Fi symbol) is shown in the notification bar and next to the call duration during the call.

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Telephone services (telephony, SMS) will be billed at the same rate that they would be if they were conducted via the mobile network.

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If you lose your Wi-Fi coverage during a phone call, the call will be interrupted.

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WiFi Calling allows you to make calls via the Wi-Fi network. You can make or receive a phone call if you have a Wi-Fi connection in an area with little or no cellular coverage.

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* iPhone 5 or newer (at least iOS 11.2)
* Samsung Galaxy S8/S8+ (most current system software)

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The following services still work when your mobile phone is logged in for Wi-Fi Calling: call forwarding, call blocking, call waiting, voicemail box, provided that they are also activated for calls via the mobile network.

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If WiFi Calling is activated on your mobile device and a Wi-Fi network with sufficient reception strength is available nearby, calls will automatically be placed via WiFi Calling. The requirement for this is that you have registered on the Wi-Fi network.

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