Samsung

Samsung Galaxy S4   

One of the most advanced phones to reach the market this year.(so far)

The Samsung Galaxy S4 stands out thanks to his big 5" screen but that's not even the least best feature.

As the message in the upper image says...Samsung Galaxy S4 is really a "Life companion".

It's slimmer than his predecesor the Samsung Galaxy S III measuring only 7.9mm thickness and has a "premium finish stylish design".

The full HD Super Amoled display has a 441 ppi offering you a great experience with it's beatiful colors and high resolution.

Some of the great new features :

•  Air View - Preview videos by hivering your finger above the screen or instanly preview and speed dial your contacts
• Samsung Smart Pause - Recognizes when to pause or play your video (basicly it detect if you turn your sigth away from the screen and pauses the video for you and plays it when you look back at the screen )
• Samsung WatchON - Makes your living room experience more enjoyable with your smartphone
• Optical Reader  - Recognizes information for you 
• Group Play:Share Music - Let's you use multiple phones as speakers 
• Group Play - Play games with your friends in real time
• Camera Features - Sound and shot - Give life to your photos by adding audio 

                                        - Cinema Photo - Animate photos and make them fun an interesting

                                        - Dual Shot - Double the joy with a rear and front camera that can be used   

                                                              simultaneously

                                        - Dual Recording - Create a more personal and dynamic video

• Chat ON - Dual Video Call - Simultaneoulsy show surroundings during a video call using both front          and rear cameras
• S Translator - Communicate globally anytime,anywhere
• Samsung Adapt Display - View more comfortably with a display optimized for your eyes
• S Health - Monitor your health,reach goals and share with your friends

 You can see all this features in this Samsung Galaxy S4 Introduction Video : 

Now let us take a look at the hardware and all it's spacifications : (Source GSMArena )

GENERAL	2G Network	GSM 850 / 900 / 1800 / 1900
	3G Network	HSDPA 850 / 900 / 1900 / 2100
	SIM	Micro-SIM
	Announced	2013, March
	Status	Coming soon. Exp. release 2013, April 26th

BODY	Dimensions	136.6 x 69.8 x 7.9 mm (5.38 x 2.75 x 0.31 in)
	Weight	130 g (4.59 oz)

DISPLAY	Type	Super AMOLED capacitive touchscreen, 16M colors
	Size	1080 x 1920 pixels, 5.0 inches (~441 ppi pixel density)
	Multitouch	Yes
	Protection	Corning Gorilla Glass 3
		- TouchWiz UI

SOUND	Alert types	Vibration; MP3, WAV ringtones
	Loudspeaker	Yes
	3.5mm jack	Yes

MEMORY	Card slot	microSD, up to 64 GB
	Internal	16/32/64 GB storage, 2 GB RAM

DATA	GPRS	Yes
	EDGE	Yes
	Speed	HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps
	WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot
	Bluetooth	Yes, v4.0 with A2DP, EDR, LE
	NFC	Yes
	Infrared port	Yes
	USB	Yes, microUSB v2.0 (MHL 2), USB On-the-go, USB Host

CAMERA	Primary	13 MP, 4128 x 3096 pixels, autofocus, LED flash, check quality
	Features	Dual Shot, Simultaneous HD video and image recording, geo-tagging, touch focus, face and smile detection, image stabilization, HDR
	Video	Yes, 1080p@30fps, dual-video rec., check quality
	Secondary	Yes, 2 MP,1080p@30fps, dual video call

FEATURES	OS	Android OS, v4.2.2 (Jelly Bean)
	Chipset	Exynos 5 Octa 5410
	CPU	Quad-core 1.6 GHz Cortex-A15 & quad-core 1.2 GHz Cortex-A7
	GPU	PowerVR SGX 544MP3
	Sensors	Accelerometer, gyro, proximity, compass, barometer, temperature, humidity, gesture
	Messaging	SMS(threaded view), MMS, Email, Push Mail, IM, RSS
	Browser	HTML5, Adobe Flash
	Radio	No
	GPS	Yes, with A-GPS support and GLONASS
	Java	Yes, via Java MIDP emulator
	Colors	White Frost, Black Mist
		- Wireless charging (market dependent) - S-Voice natural language commands and dictation - Smart stay, Smart pause, Smart scroll - Air gestures - Dropbox (50 GB storage) - Active noise cancellation with dedicated mic - TV-out (via MHL 2 A/V link) - SNS integration - MP4/DivX/XviD/WMV/H.264/H.263 player - MP3/WAV/eAAC+/AC3/FLAC player - Organizer - Image/video editor - Document viewer (Word, Excel, PowerPoint, PDF) - Google Search, Maps, Gmail, YouTube, Calendar, Google Talk, Picasa - Voice memo/dial/commands - Predictive text input (Swype)

BATTERY		Li-Ion 2600 mAh battery
	Stand-by
	Talk time

MISC	SAR US	0.85 W/kg (head)     1.55 W/kg (body)
	SAR EU	0.42 W/kg (head)     0.54 W/kg (body)
	Price group

TESTS	Display	Contrast ratio: Infinite (nominal) / 3.352:1 (sunlight)
	Loudspeaker	Voice 70dB / Noise 66dB / Ring 77dB
	Audio quality	Noise -82.5dB / Crosstalk -81.5dB
	Camera	Photo / Video

Samsung Galaxy S4 on xda-developers.Here you will find almost anything you need to know about personalizing you phone install custom ROMs and much more interesting and useful stuff.