Smart stay, Smart rotation, Smart pause, Smart scroll, and face unlock are all really handy Samsung Galaxy S4 features!
The front-facing camera on the Samsung Galaxy S4 can pay attention to your face and eyes to enable quite a few functions. Smart stay will dim the screen when you're not looking at it in order to save battery, and pause inconvenient time-outs when you are. Smart rotation can make sure the screen stays the right side up when you're lying down. Smart pause will pause video if you're not looking at it. Smart scroll will even scroll down a page by tilting your head. For light, easy security, facial recognition can be used to unlock your phone, too.
That's an awful lot of features, but don't worry, we'll show you how to activate or deactivate them. It's actually really easy.