Just like anything else, physical break or liquid contact can cause the home button to stop functioning. This might increase the distance necessary to get a click from the button, allowing the same sort variability of movement as a worn gasket. Check to be sure the mounting bracket is flat.If you open your phone and see a screw stuck to the Taptic Engine, chances are, that’s where it came from. Reinstall it, and retest. The iPhone 6S in particular is prone to losing screws. This bracket provides stabilization as well as the surface the button mechanism presses against. Verify all the screws for the mounting bracket are present.Having a spare is better than trying to reuse the same gasket with a weak adhesive. They mount with adhesive and alignment is key. Pro Tip: If you need to replace the gasket, buy an extra.Check for tears or a general “looseness” of this component.
This may allow the button to deflect when pressed rather than depressing straight down. The gasket which provides a seal between the home button and the screen is prone to wear.
