Requires iOS 4.0 or higher
Does NOT work for iPad
With PhySwitch, you can use your iPhone's/iPod touch's volume keys to change between applications!
It's simple: after installing this, go to Settings and select the desired event to open PhySwitch, using LibActivator. We recommend using "press both volume buttons together", but you can choose whatever you want.
Then, just open PhySwitch and use the volume keys to switch between the applications! You can use the touchscreen to change between them too! :)
See further below for Screenshots and a Video Demonstration