Samsung’s new Galaxy S4 features a 5-inch 1080p HD screen and a slightly slimmer, lighter build than its antecedent. (Credit: Sarah Tew/CNET)Beneath the back panel sits a 2,600mAh battery and a microSD card slot capable of up to 64GB in expandable storage. (Credit: Sarah Tew/CNET)With a full 5-inch of screen to use, the Galaxy S4 offers plenty of room for fingers to dial. Sarah CNETThe Galaxy S4 includes the multi-tasking feature first seen on the Galaxy Note 10.1 tablet and Note 2 smartphone. Sarah/CNETOpen the Samsung Galaxy S4’s Smart screen function to activate controlling the device with your eye movements. Sarah / CNETThe Samsung Galaxy S4 can use “Air Gestures” to interact with the device just with the wave of the hand. For instance, you can slide your hand back and forth horizontally to switch between browser tabs or even answer calls. Sarah Tew/CNETSmart stay will keep the Galaxy S4’s screen on while you look at it. Sarah/CNETTransmit documents, music files, photos, and other content to other Galaxy S4 handsets without having to use Wi-Fi or a cellular connection. Sarah Tew/CNETWith the GS4’s new dual-shot mode, you can combine photo and videos from the front-facing camera and rear camera into one frame. You also can choose from a set of wacky frames. Sarah Tew/CNETDrama Shot combines all the actions from a burst shot into a single frame. If someone is jumping, for instance, you see all stages of the jump in one shot. Sarah Tew/CNETCinema Photo lets you animate just one portion of a video and keep the rest static (it creates a GIF). You then can edit your work as you please. CNET