Does Wi-Fi calling automatically switch to cellular?

When Wi-Fi Calling is available, “Wi-Fi” is displayed after your carrier name in the status bar, and all your calls go through Wi-Fi. Note: If the Wi-Fi connection is lost when you make calls, calls switch automatically to your carrier's cellular network using VoLTE (Voice over LTE), if available and turned on.



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With overloaded networks, you'll experience slower cellular data speeds because you are sharing bandwidth with everyone around you. Weak signal strength can result in poor voice call quality and dropped calls. Some devices don't support WiFi calling. You must have a smartphone with built-in WiFi calling capabilities.

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Tip: You can send texts over Wi-Fi even if you don't have cell service. Just use Messages as you normally would. If you're not connected to Wi-Fi, make sure cellular data is turned on: On your Android device, open the Settings app.

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Having Wi-Fi turned on drains your battery if you're not using it, but if you're on a wireless network, it's more power-efficient to use Wi-Fi than to use cellular data, so switch to Wi-Fi instead of your mobile network when you can to save your phone's battery life.

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