Question:
What is Wi-Fi calling?
- a method used to push apps to smartphones
- a convenient way to securely and digitally make payments with mobile devices
- a government emergency alert service for smartphones
- a way to make mobile phone calls over a wireless data network
- a method for sharing data between two mobile devices
Explanation: Wi-Fi calling is a way that a mobile phone can use a wireless data network to make phone calls as if it were connected to a cellular network. In cases where cell phone coverage is inadequate, calls can be placed from places that have open Wi-Fi networks.
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