Apple enabled multitasking on iOS 4.0 only for iPhone 4 and 3GS, but if you Jailbreak using our guide the you will have Multitasking on iPhone 3G too. Check Our JailBreak Guide for Your suitable iPhone from here.
Double pressing the Home button will again bring up the multitasking menu. If we swipe to the left we can see all the applications that are currently running or suspended in the background. You can tap any one of these to launch the application.
If you swipe all the way to the right you will be shown the iPod widget and Portrait Orientation Lock. Using these buttons you can control the playback of your music, quickly launch the iPod application, or prevent the screen from rotating into landscape mode.
QUITTING A BACKGROUND APPLICATION
**Remember not all applications have been updated with support for fast switching or backgrounding but hopefully most will have this ability in the near future.
**Please note that we are aware of how basic this tutorial is. It is being provided as reference to those new to the iPhone and unfamiliar with its technology.
Check this video on Multitasking
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