Mobile 4G can play video calls
Call the 3G card and 4G card can be the phone video, Unicom 4G can also and move 4g video.
Video services, there are common standards, but the line is different, will affect the fluency only. Such as Unicom and China Unicom users will be better than the video between different operators.
Otherwise, the operator can only in their own internal video, this service is meaningless.
Because the video is through the internet. Different operators are only access to the Internet channel, once access, is one, and will not be sub-Unicom users or mobile users, users will not be divided into the United States or South Korean users, we are in a On the Internet. Of course you can video.
