Why did the home button on my iPhone 6 stop working all of a sudden?

[iMore Question]

I have no idea why this happened. It worked yesterday but not this morning

 

[kch50428]

Re: My start key on the front of my iphone 6 has stopped working it does nothing at all when I press

Restart the phone? Reinstall the iOS... Take to an AppleStore Genius Bar for evaluation and possible warranty replacement.