Cartoon Network will release an app later this year that will deliver original 15-second content bites — videos, games, polls, and trivia — solely to mobile devices, the company said Friday. Cartoon Network Anything, which the company calls a “micro-network,” aims to tackle the brand-new technology question of how to deliver device-specific content. As more and more of our television watching, game playing, news reading and attention turns to mobile devices, media companies are discovering that we use phones and tablets in very different ways. For example, tablets stay at home and more often act as a second or third television set than as a device for consuming content on the go. Some 80 percent of tablet usage happens at home, according to Adobe, and Motorola reported last year that more people watch shows and movies on tablets in the bedroom than they do on a television set.