iPhone 4S' home button isn't working properly My iPhone 4S' home button isn't working properly. It works sometimes and sometimes it doesn't. Could it be because of the dust? 

If dust is the problem how do I proceed with removing dust particles? And, if not, what can I do?
I don't know about the dust, but you could enable AssistiveTouch, which will place a round button on the screen, which gives you access to all the home button features, and more like volume, gestures, etc. To switch it on go to Settigngs -&gt; General -&gt; Accessibility Scroll down to AssistiveTouch and turn it on.