Two things that always goes on an iphone:
- fingerprint reader/home button
- power button
And the settings to bypass that is buried deep in settings.
The iPhone 7 isn't a significant update from the 6s as the 6s was from the 6. Then, you get that error where if you change the display or change the home button, it will be forever disabled unless apple fixes it for you for a hefty fee.
I've had an iPhone ever since the 3gs came out.
Edit: someone beat me to the bypass hahaha
Settings -> General -> Accessibility -> Home Button -> Rest Finger to Open