The Samsung Galaxy S4
is a smartphone manufactured by Samsung
Electronics. It was announced in New York City on
March 14, 2013 as the successor to the Samsung
Galaxy S III. The phone has many distinguishing
software features such as Air Gesture, Smart Stay,
and Smart Scroll; a 13-megapixel back camera, and
a 5-inch (130 mm) 1080p display. It is the first
TCO certified smartphone. The S4 has two major
variants, one featuring a quad-core . On June 17,
2013 JK Shin, vice president of Samsung Mobile
announced that the Samsung Galaxy S4 is to have
another variant with LTE-Advanced connection,
which is twice the speed of 4G LTE.
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
hocsharing 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.
The camera app implements
numerous new features (some of which were first
seen on the Galaxy Camera), including an updated
interface, "Dual Shot" (which uses the
front-facing camera for apicture-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.
The ChatON app has basic features which are
auto friends registration, text chat, and
multimedia deliver, and put new features which are
My Page, voice/video chat, and translate. The main
function of ChatON is divided into Multimedia,
Group Chat, Trunk, and Animation Message. ChatON
can send text, picture, video, and 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) PenTile
RGBG Full HD Super AMOLED screen with 441 pixels
per inch; it is made of Gorilla Glass 3.
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.
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 aFeliCa 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 standardspecial
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.
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:
Quad-core
variant
This S4 version for North America, most
of Europe, parts of Asia, and other countries has
Qualcomm's Snapdragon 600 SoC containing a
quad-core 1.9 GHzKrait 300 CPU and an Adreno 320
GPU.
