iPhone OS 4 features various new features, giving users a better overall experience and more control over the device. it takes multitasking to a new level altogether and allows users access to more than 1500 additional APIs, which features home screen wallpapers, digital zoom and bluetooth keyboard access. it also includes multitasking support.

A simple home button double click introduces the task menu at the screen’s bottom. nevertheless, this is just a way to switch between applications quickly. iPhone OS 4 works great with iPod touch and iPhone 3G. however, users with second generation touch won’t be able to access their multitasking features.

iPhone OS 4 introduces enhanced email application with the ability to organize emails by thread and unified inbox. it also enables users to open attachments using applications. Apple also has game center at hand, which, basically is a social gaming network that features automatic matchmaking for multiplayer achievements, leaderboards and games.

iPhone OS 4 is also laced with latest browser compatibility feature which yields faster search results. it either alerts you on standard gestures or allows you hand-code various gesture awareness. iPhone OS offers the best way to read, buy and browse books on mobile devices.

iPhone allows you to flip through the pages of iBook while listening to music collection. it gives users the freedom to browse several books for free based on author, title and genre. it also permits you to read sample pages and check out reviews before purchasing.

IOS 4 allows user applications to continuously play their audio, so that customers can easily listen to the application while playing games, surfing the web and more. Data sharing, push notifications and cut copy are some of the major features of iOS 4. You can either upgrade your device online or at any apple outlet.