Some specs for the S IV i9500 version:
Network: 2G / 3G (LTE available only in i9505 version unfortunately)
Size: 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: Super AMOLED capacitive touchscreen, 16M colors, 1080 x 1920 pixels full HD, 5.0 inches (~441 ppi pixel density) Multitouch, Corning Gorilla Glass 3
Memory: Card slot microSD, up to 64 GB, Internal 16/32/64 GB storage, 2 GB RAM
Camera: Primary 13 MP, 4128 x 3096 pixels, autofocus, LED flash, Video 1080p@30fps, dual-video recording, Secondary 2 MP, 1080p@30fps, dual video call
OS: Android v4.2.2 (Jelly Bean)
Chipset: Exynos 5 Octa 5410
CPU: Octa-Core big.LITTLE containing a Quad-Core 1.6 GHz Cortex-A15 and a Quad-Core 1.2 GHz Cortex-A7
GPU: PowerVR SGX 544MP3
Sensors: Accelerometer, gyro, proximity, compass, barometer, temperature, humidity, gesture
Radio: Not supported
GPS: Yes, with A-GPS support and GLONASS
Features:
- microSim
- NFC
- 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 (Swiftkey Keyboard v4)
- 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 (Swiftkey Keyboard v4)
Here are the stock wallpapers from the Samsung Galaxy S IV GT-I9500:
Thanks to the team @gsmarena, we now have the Samsung Galaxy S4 versions breakdown by countries, you can find it here.