In video games, some lag can be resolved with the right graphics cards. When lag troubles K–12 teachers using wireless casting to show videos, however, the solution isn’t always so simple. Using ...

The catch is that for eighty bucks you get unlimited Internet access, whereas V CAST is more of, how do you say, a walled garden. (By the way, the phone we're using to test the service—LG's 1.3 ...