You can check the latest guide about iPhone 7 home button.
How to fix the iPhone 7 home button not working? If you are pressing your home button on your new iPhone 7 and then it doesn’t always response your action, then there may be such an iPhone 7 problem has occur. Even if the problem is intermittent or doesn’t appear frequently, it still seems to be annoying issue to fix as soon as possible.
Home Button Not Working
The solution is you can create schedule to meet Genius Bar at your nearest Apple Store to discuss about the issue. Actually, Apple itself has been aware with this manufacturing issue related to the Home button on several iPhone models including this new iPhone 7 and iPhone 7 Plus.