Chosen Solution
So I have a problem. I repaired my display on my iPhone 6 and I know how to do it perfectly because I worked in a repair store 6 months ago for 2 years and some more experiences. And suddenly now my home button doesn’t work when my phone is sleeping. I can use my power button to wake it and then my home button works perfectly fine. Even when I put it back to sleep, it is working but only for the first 5 seconds. When my charging cable is plugged into it, it works like 60-70% of the time even when it was off for an hour or more. Also, the touch ID isn’t working anymore. Home button was never replaced.
Either the home button extension cable is partially damaged or teared (really hard to tell but it’s easy to damage) or the home button cable itself on the home button is damaged. Best bet is to try another home button extension cable first (I buy with the metal shield to avoid the hassle of trying to install the home button cable without it pre-assembled). Here is the part I am talking about, ignore where it says replacing the cable stops touchID from working, it is false and only applies to replacing the actual home button itself. iPhone 6 LCD Shield Plate with Sticker and Home Cable
I am 90% sure you damaged the ribbon cable or the connection housing in the odds is the ribbon replace the home button and it should be fine if not then the connection between the ribbon housing on the main board and the board is damaged and you are up a creek with out a paddle
