How to watch the 2018 FIFA World Cup on TV on Roku (free)

A streaming service called Roku lets you watch the World Cup through an Android or iOS device.Here are some of the things you'll need to know:What is Roku?Roku is a video streaming service.The service has more than 200 devices available in more than 100 countries around the world, according to Roku's website.Roku doesn't have a traditional TV tuner, so if you want to watch a game on Roku, you have...