It probably doesn't happen much, but occasionally you'll run into a frozen or bugged-out app on your iPhone or other iOS device. That's where force-closing comes in, allowing you to close any app manually through a few clicks and swipes. While the process of force-closing an app is fairly straightforward on the iPhone, it's not so apparent on the Apple Watch. So if you have a frozen or troublesome app on your Watch, here's how to force-close it. Go to your Home screen, open an app, and hold d...