iPHONE 4S Review

Siri on iPhone 4S lets you use your voice to send messages, schedule meetings, place phone calls, and more. Ask Siri to do things just by talking the way you talk. Siri understands what you say, knows what you mean, and even talks back. Siri is so easy to use and does so much, you’ll keep finding more and more ways to use it.

Dual-core A5 chip: The most powerful iPhone ever. Two cores in the A5 chip deliver up to two times more power and up to seven times faster graphics. And you’ll feel the effects. Fast. iPhone 4S is quick and responsive, which makes all the difference when you’re launching apps, browsing the web, gaming, and doing just about everything. And no matter what you’re doing, you can keep on doing it. Because the A5 chip is so power-efficient, iPhone 4S has outstanding battery life.

Camera : With 8 megapixels and all-new optics, this just might be the best camera ever on a mobile phone. It just might be the only camera you’ll ever need. And if you think that’s amazing, wait until you see your photos.


Operating System: With its easy-to-use interface, amazing features, and rock-solid stability, iOS is the foundation of iPhone. And even as others try to catch up, the technologies and features built into iOS keep iPhone years ahead.

Dimension: 

Height: 4.5 inches (115.2 mm)

Width: 2.31 inches (58.6 mm)

Depth: 0.37 inch (9.3 mm)

Weight: 4.9 ounces (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)⁴

802.11b/g/n Wi-Fi (802.11n 2.4GHz only)

Bluetooth 4.0 wireless technology

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

Camera, Photos and Video:

8-megapixel camera

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