Introducing Samsung GALAXY S4

Software

The Galaxy S4 ships with Android 4.2.2 and Samsung's TouchWiz Nature user experience. Eye tracking features have been extended on the S4; the new "Smart Scroll" feature can be used to scroll while looking at the screen by slightly tilting the phone, and "Smart Pause" allows the video player to pause videos if the user is not looking at the screen. "Air View" implements gestures and other functionality (such as previewing images or messages) by holding or swiping a hand or finger slightly above the screen. The "Group Play" feature allows ad hoc sharing of files between Galaxy phones, along with multiplayer games and music streaming between Galaxy S4 phones. The "Adapt Sound" and "Adapt Display" functions can automatically adjust settings for the screen and sound system for optimal quality.^{[citation needed]}

The camera app implements numerous new features (some of which were first seen on the Galaxy Camera), including an updated interface, and new modes such as "Drama" (which composes a moving element from multiple shots into a single photo), "Eraser" (which takes multiple shots and allows the user to remove unnecessary elements from a picture), "Dual Shot" (which uses the front-facing camera for a picture-in-picture effect), "Sound and Shot" (which allows the user to record a voice clip alongside a photo), "Animated Photo", and "Story Album" among others. Other new pre-loaded apps include WatchOn (an electronic program guide that can utilize an infrared transmitter on the top of the phone as a TV remote), S Translator, the workout tracker S Health, S Voice Drive, S Travel, and an optical character recognition app. A new enterprise-oriented feature known as Samsung KNOX allows the phone to be separated into modes for personal use and business use, and gives the business mode high security.^[15] It supports the aptX codec which improves Bluetooth-headset connectivity.

The ChatON app has basic features which are auto friends registration, text chat, & multimedia deliver, and put new features which are My Page, voice/video chat, & translate. The main function of ChatON is divided into Multimedia, Group Chat, Trunk, and Animation Message. ChatON can send text, picture, video, & audio as multimedia. Users use the personal profile into My Page. They can create group chat rooms just by selecting more than 2 buddies. All the contents that have been shared in each chat is saved into each trunk. Animation Message turns some simple drawing and stamping into short moving videos.

Hardware

The screen features a 5-inch (130 mm) (sometimes stated as 4.99-inch)^[16] PenTile RGBG Full HD Super AMOLED screen with 441 pixels per inch; it is made of Gorilla Glass 3.^[17]

The S4 comes with either 16GB, 32GB or 64GB of internal storage, which can be supplemented with up to an additional 64GB with the microSD card slot.^[18]

The S4 GT-I9505 includes a multiband LTE transceiver and both models feature an infrared LED that can serve as a universal remote control.^[5]

Built into the 2600 mAh battery is near field communication (NFC) connectivity, which allows users to perform non-touch payments at shops that employ specially equipped NFC cash registers. The SC-04E model has a FeliCa secure element, unlike other models which contain an NFC-A secure element. The NFC-A secure element on the SC-04E is provided on the SIM card. The battery can be wirelessly charged using a Qi standard special charging pad (sold separately) that utilizes magnetic resonance to produce a magnetic field through which power can be transferred.

The Galaxy S4 supports the High Efficiency Video Coding (HEVC) video format.

In addition to the touchscreen, the S4 has several physical user inputs including a home button located near the bottom of the screen, at the bottom of the S4 is the primary microphone and the microUSB port for both data connections and charging; it also supports USB host and MHL 2.0. There are volume keys on the left side and a power/lock key on the right. At the top there is a 0.14-inch (3.6 mm) headphone jack, the secondary microphone, and infrared blaster. The backside of the S4 has the 13 megapixel camera lens and LED flash, and at the bottom left edge has the loudspeaker.

Samsung's official accessory for the S4, the S-View Cover, utilizes a hall effect sensor in the phone which detects when the cover is closed and displays battery status, time, and other phone statuses in an area of the screen visible through a window on the cover.

The S4 comes in two variants that differ primarily in the internal hardware: