Today is a very important day for every iPhone user as Apple will be releasing the iOS 4 for all the users. With over 100 new features, the free iOS 4 Software Update lets you do some amazing things like Multitasking, Folders, iBooks, Tap to focus video, Wireless keyboard support and many more. iOS 4 works with iPhone 4, iPhone 3GS and iPhone 3G. But not all features are compatible with all devices. For example, multitasking is available only with iPhone 4 and iPhone 3GS.

iOS 4 can also be used to upgrade your iPod touch 3G and 2G, but not all features are supported. There is no official support for iOS 4 on iPhone 2G(EDGE) and iPod Touch 1G. But there are experiments that are done to enable Multitasking, Wallpapers on iPhone 3G and modded 3.1.3 firmware with iOS 4 features for iPhone 2G.

iOS 4 Update Features

• Multitasking – Multitasking enables you to run your favorite third-party apps and switch between them instantly without slowing down the performance of the foreground app or draining the battery unnecessarily.
• Folders – You can now organize all your apps into folders with drag-and-drop simplicity. Get faster access to your favorites and browse and manage up to 2160 apps.
• Even better Mail – See messages from all your accounts in a unified inbox, organize messages by threads, open attachments in third-party apps and more.
• iBooks – iBooks is more than a great ebook reader and is also an amazing place to browse and shop for books.
• Create playlists – Create custom playlists right on your iPhone.
• 5x digital zoom – Get closer to your subjects by zooming in up to 5x.
• Tap to focus video – While shooting video, tap the display to choose where to focus.
• Faces and Places in Photos – View photos based on who is in them and where they were taken.
• Home screen wallpaper – Change the background wallpaper on your Home screen.
• Gift apps – Send apps as gifts to your friends or family.
• Spell checking – A built-in spell checker works in Mail, Notes, and other apps.
• Wireless keyboard support – Pair a keyboard based on Bluetooth wireless technology with your iPhone.

Stay tuned to TechHail to hear more about iOS 4 features, updates and other news.