The technology gives the Samsung Galaxy S4 are a nice touch, allowing a user to navigate between tabs by merely moving his or her hands a few inches from the screen. The phone's camera detects the motion and moves the screen accordingly. Say your phone is lying on a flat surface, then you need to simply move your hand above the sensor. The screen will automatically light up and display a quick summary of stats like missed calls, emails, date and time, and the status of your battery charge.
