The front and back now glass. Supposedly, the glass used is 30 times harder than plastic and is comparable to the strength of sapphire crystal.
The cool part about this is that the metal trim serves as an antenna for 3G, Wi-Fi, GPS, and Bluetooth, which helps signal significantly.
The iPhone now also has 512 MB of RAM, which is a big step up from the 256 MB found in the iPhone 3GS. Apple's latest smartphone is launching with iOS 4, the latest version of Apple's operating system. This brings a range of new features, including the greater support for multitasking I've mentioned several times now. The Droid X, EVO 4G, and the Nexus One are right up with the iPhone 4.
Main specifications :
Retina Display with 326 pixels per inchpixels per inch and has 78% of the pixels on an iPad, 960×640 pixels display, 3.5 inch, 9.3mm thickness, Apple A4Apple A4 Chip, upto 32GB internal memory, microSIM Card, Bigger Battery, 5 Megapixel Camera with LED Flash and 5x zoom and tap to focus, HD video Recording, Video Calling Camera, Wi-Fi, Video Editing with iMovie, Bluetooth, Quadband GSM/3G/HSDPA/HSUPA, 7.2 Mbps download speeddownload speed, 5.8 Mbps upload, Dual mic for noise suppression, GPS, Accelerometer, Compass, Gyroscope, Battery Life : 7 hours 3G talktime, 6 hours browsing, 10 hours WiFi, 40 hours of music, and 300 hours of standby, runs on iOS4, Uses glass for Scratch resistance.
