iPhone 5 Preview

The new iPhone is 18 percent thinner than the iPhone 4S. Apple says it's the thinnest handset around.
The Retina Display expands from 3.5 inches to 4 inches. The total resolution remains the same, though, at 326 pixels per inch. The total pixel count is 1,136x640 and we now have a 16:9 aspect ratio.
Apple also promises that wide-screen movies will look better with 44 percent more color saturation than the iPhone 4S.
Touch sensors are now built into the display itself, which makes it 30 percent thinner as a result and less prone to glare.
Apple replaced the glass back with one that's mostly metal.

LTE and carriers
The iPhone 5 will support 4G LTE networks. That's in addition to the current support for GPRS, EDGE, EV-DO, and HSPA data networks. LTE has a single chip for voice and data, a single radio chip, and a "dynamic antenna" that will switch connections between different networks automatically.
Support for LTE
In the United States  AT&T, Sprint, and Verizon Wireless.In Canada it's Bell, Telus, Fido, Virgin, and Kudo. In Asia it will be SoftBank, SmarTone, SingTel, and SK Telecom. For Australia there's Telstra, Optus, and Virgin Mobile and in Europe it will go to Deutsche Telekom and EE. On carriers without LTE, the iPhone 5 will run on dual-band 3.5G HDPA+.

Chip
The iPhone 5 will offer an A6 chip, which is two times faster than the current A5 chip. Graphics will get faster speeds.The new chip will be 22 percent smaller than the A5. According to Apple's , users will see Web pages load 2.1 times faster, and the Music app with songs will load 1.9 times faster.

Battery life
We're supposed to get 8 hours of 3G talk time, 8 hours of 3G browsing, 8 hours of LTE browsing, 10 hours of Wi-Fi browsing, 10 hours of video playback, 40 hours of music playback, and 225 hours of standby time

Camera
The main shooter, or the "iSight" camera, stays at 8 megapixels (with the best resolution being 3,264x2,448 pixels) with a feature list that includes backside illumination, a hybrid IR filter, a five-element lens, and a f2.4 aperture. A dynamic light mode is new, and you should be able to launch photography apps up to 2.1 times faster. Another addition is an image signal processor in the A6 chip. That will bring spatial noise reduction and a "smart filter" that produces better low-light performance and captures photos faster.Another feature, there's a built-in panorama mode that stitches shots together for one large 28-megapixel photo.
The secondary front camera now can shoot 720p HD video and it gets a backside illuminated sensor. FaceTime will work over 3G cellular networks.
Video resolution remains at 1080p HD, though image stabilization has been improved and face detection is now available in clips for up to 10 people. And now you can take photos while you're shooting video.

Audio
The iPhone 5 gets an additional microphone for a total of three. You'll find one on the bottom, one on the handset's front face, and one on its rear side. What's more, the speaker now has five magnets (so up from two), which is apparently better and it's supposed to use 20 percent less space. The noise canceling feature is improved, as well, and there's a new wideband audio feature that promises more natural-sounding voices. Twenty percent of carriers will support wideband audio.

Smaller dock connector and smaller SIM card
On the bottom of the iPhone 5, there's that new and long-anticipated smaller dock connector. Called "Lightning," it has an all-digital, eight-signal design and an "adaptive interface"  It's 80 percent smaller and since it's reversible, both ends will be the same
Apple will offer an adapter and adapter cables which range from $19 to $39.  For new accessories, Apple says that manufacturers like Bose, JBL, and Bowers are working on new products.

iOS 6
The iPhone 5 comes with iOS 6 already on board.iOS 6 includes the new Apple Maps app, Passbook, shared photo streams, Siri updates, and the  FaceTime over 3G.

Release date and pricing 
The iPhone 5 will be available in three capacity models, all of which will come in black and white versions. The 16GB is $199, the 32GB $299, and the 64GB $399. On September 21, it will go on sale in nine countries: the United States, Canada, the United Kingdom, Germany, France, Australia, Japan, Hong Kong, and Singapore. Anyone listed in the above mentioned countries can pre-order starting this Friday, September 14.