I have made a screen replacement on my iPhone 6. Now the touch ID does not work any more. I have read that if the home button flex cable is damaged, this can occur. Is that really so? The button itself is working just fine.

I know for a fact that the home button can not be replaced because then touch id will not work, plus you can never upgrade the phone again without getting a error 53. Can you confirm this?

So my last question. Can I replace the home button flex cable or is that also coded to the chip or home button touch id?