This is arguably one of the best hidden features in the Apple ecosystem. What if I told you you can control your phone with a keyboard. It's that simple.Sounds crazy, doesn't it. Well, it's not. Here's how to hack your iPhone onto your Mac.Leave your phone in the other room and stick to one screen and one screen only. And that's that wide Mac screen. Now, transferring files, buying that next Amazon package, or sending a photo from your Mac to your phone just got that much simpler.And that's because. ...