No doubt the most popular smartphones on the market for 2010 the iPhone 4 has a 3.5 in . Retina screen with a resolution 960×640 pixels, that is 4x as many pixels as previous iPhones, in excess of 100,000 pixels per sq . in . and the highest resolution in any phone. It is so in depth that the human eye can't distinguish individual pixels plus the fingerprint resistant finish guarantees images stay vibrant and stunning. The iPhone 4 is less than 10mm thick compared with 12mm for its predecessor last year, the iPhone 3GS. The screen has roughly four times as much detail as before. There is also a front-facing camera, which could be used for videoconferencing, in addition to one on the back for pictures. Jobs called it "the biggest leap since the original iPhone".. Video calling is now capable and consumers can switch between your front facing self-portrait camera and back facing scenic camera during a call. But Apple could not leave the built-in optics right now there, the five mp camera claims outstanding photographs and incorporates LED flash, geo-tagging and touch-to-focus whilst the Hi-def video recorder records 720p video at around 30fps. Any of you motion picture fans can not only create their very own movies but additionally edit them and add transitional effects using the iMovie app. The new operating system delivers true multitasking on the iPhone with out degradation to the battery life. Programs can be moved into separate folders along with voice activated instructions offer a more fun means to access your most up-to-date app download. A unified inbox retains incoming mail messages in a single place whilst the Safari Internet browser permits you to go every place. This impressive feature set goes on with 3D movement controlled gaming, iBooks along with a built-in iPod for playing the hottest music in addition to video downloads via iTunes. The good news here's that taking pleasure in these features to the fullest extent does not make the battery pack any difficulties with its performance increased by 40% compared to previous Apple iPhones. When the time comes to step away from the virtual world provided by the apple iphone 4, A-GPS, maps plus a digital compass make sure the iPhone 4 is still your finest friend. Overall though, the iPhone 4 is a fantastically well-balanced unit, combining style, design and functionality in to something that feels fresh and modern. That it's evolution as opposed to revolution is neither here nor there; what is crucial is that Apple persists to produce the goods, time and again.