This is a quick and simple way to recalibrate your home button, if it starts to play up on your iOS devices.
First off load up one up the default Apple applications, like the weather or the stocks application. Once its loaded, press and hold the power button until you see the slide to power off screen.
When you are faced with this screen, press and hold the home button until the application quits. Once it has completed and the application has quit, then your home button should be back to working as normal.
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