Dale has an iPhone 6s Plus and the battery isn't keeping a charge like it's used to. He's also noticing that his screen feels like it's starting to bulge. Leo says that Dale needs to take it into Apple because the battery is starting to swell and that's a hazard. And Apple may replace it for free. They'll at least replace the battery for $99. If he can't go to an apple store, an authorized Apple repair store will suffice. Or he can try and do it by mail.