iPhone home button makes cracking noise
Recently I got my iPhone replaced at an apple store so I'm assuming the phone is refurbished. The problem is when I touch the home button it makes a light cracking noise. It doesn't make it when I press it down, only when I tap it. Will the problem persist? I don't want to have to go back to the Genius Bar as it involves quite a long journey.
iPhone 5, iOS 6.0.2