Chosen Solution
I have had a couple of devices lately where I complete a screen replacement and afterwards the home button will not wake the screen. It results in having to wake the screen using the power button. After the screen is active the home button works as normal. Does anyone have any ideas what this may be? Cheers John
This is a symptom of damage to the chip on the home button flex, you can try a whole new home button link cable, but if that doesnt cure it its the home button assembly itself. Its possible to change the chip on the flex (usually just needs reballing), but its not a particularly nice job. You can also try another home button assembly and see if it works then, if you change it though it’ll stop touch id working, but it would tell you one way or another whats wrong.