What is Wi-Fi calling?

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.