
Apple keeps moving forward in introducing new technology and keeps its users hope alive again.
Technical Specifications of iPhone 4s are:


Capacity: 16GB, 32GB and 64GB
Price: $199, $299 and $399
Size: 4.5 X 2.31 inches and Weight: 140 grams
Cellular and Wireless:
World phone
UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz);
GSM/EDGE (850, 900, 1800, 1900 MHz)
CDMA EV-DO Rev. A (800, 1900 MHz)
802.11b/g/n Wi-Fi (802.11n 2.4GHz only)
Bluetooth 4.0 wireless technology
Location: Assisted GPS and GLONASS
Digital compass
Wi-Fi
Cellular
Camera, Photos and Video:

Autofocus
Tap to focus
Face detection in still images
LED flash
Video recording, HD (1080p) up to 30 frames per second with audio
Video stabilization
Front camera with VGA-quality photos and video at up to 30 frames per second
Photo and video geotagging
Display:
Retina display
3.5-inch (diagonal) widescreen Multi-Touch display
960-by-640-pixel resolution at 326 ppi
800:1 contrast ratio (typical)
500 cd/m2 max brightness (typical)
Fingerprint-resistant oleophobic coating on front and back
Support for display of multiple languages and characters simultaneously

Built-in rechargeable lithium-ion battery
Charging via USB to computer system or power adapter
Talk time: Up to 8 hours on 3G, up to 14 hours on 2G (GSM)
Standby time: Up to 200 hours
Internet use: Up to 6 hours on 3G, up to 9 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 40 hours
Audio Playback:
Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
TV and Video:
AirPlay Mirroring to Apple TV support at 720p
Video mirroring and video out support: Up to 1080p with Apple Digital AV Adapter or Apple VGA

Video out support at 576p and 480p with Apple Component AV Cable; 576i and 480i with Apple
Composite AV Cable (cables sold separately)
Video formats supported: H.264 video up to 1080p, 30 frames per second, High Profile level 4.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format
Sensors:
Three-axis gyro
Accelerometer
Proximity sensor
Ambient light sensor
Specs Reference: http://www.apple.com/iphone/specs.html
