The 680th: What is Wi-Fi Calling-Keitai Watch Watch

"Wi-Fi Calling" is a function to make calls and send / receive SMS using Wi-Fi. Even if the radio wave of the mobile phone does not reach, if you can connect with Wi-Fi, you can make and receive calls using your usual phone number, and you can also send and receive SMS in real time. You can also think of expanding the area of ​​your mobile phone with Wi-Fi radio waves.

In Japan, you can browse the internet, use apps, and send and receive emails via Wi-Fi, but even if Wi-Fi is connected, you cannot make calls outside the area of ​​your mobile phone. On the other hand, in the United States, T-Mobile US has been providing this service since 2007, Sprint in the United States is also providing it, and AT & T plans to provide it in 2015 as well. Outside the US, it is offered by Rogers of Canada, EE of the United Kingdom, Orange UK and others.

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In recent models that support Wi-fi Calling, iPhone 6/6 Plus / 5s / 5c is supported by the latest OS "iOS 8". Also, on other smartphones, Android, Windows Phone, etc. can be used by adding a dedicated application, for example, in the case of US T-Mobile US, Samsung's "GALAXY Note 4", LG's "G3" , Etc. are pre-installed and sold as "Wi-Fi Calling compatible mobile phones".