Voice calls require about 10 bps, and images require data rates of about 500 kbps. A simple way to check is to run a video like YouTube or Weibo. If the screen is displayed normally, it is possible to use video communication software such as Skype, Zoom or WeChat. It's also a good idea to install software on your desktop or mobile device to verify network speed. Before video class, be sure to check the network speed and start the class at a steady speed.
EL KOREAN supports its app to be used on both mobile and desktop devices. Mobile devices can be used anywhere at any time; So teacher and student can use. But if the textbook to show on the screen on your device is used, a large-screen PC would be better.