Do not jailbreak the phone. Select the “Settings”, and then you will find the option which is called “General”, select the “Accessibility“, which has a “ASSISTIVETOUCH”, slide the switch to “On”.
And finally the virtual home bottom will appear in the bottom right-hand corner of your screen.
Tapping the virtual home button gives you access to several features including basic phone functions, favourite tasks and gestures. But there is a bad point that is easy to press the virtual button when you are playing the game.