Chosen Solution

hi friends! first , sorry for my poor english speaking .. ok my iphone 6plus get touch deases! I replace the Touch IC with a new one and my touch screen is well now! But! after replace touch IC my fingerprint doesnt work ! when I want active fingerprint and setup touch ID , my iphone say : Failed, Unable to setup touch ID , please go back and try again … home button works corectly … everything is correct , only touch id ( fingerprint) faild , what can I do?!?

The touch id is very sensative on these phones. Failure could be caused a few different ways. The most common would be.

  1. The home button was not replaced with the original button. The button and logic board are paired at “birth” and they can only speak to each other.
  2. The flex cable is very sensative. If the button was removed, it may have damaged a small trace in the cable. The connection may not be well seated. Try removing it, cleaning them, and reconnecting.
  3. The heat required from a touch ic repair is know to cause a few different side effects. Although I haven’t seen touch id fail, I wouldn’t say it’s impossible. Heating up a board like that can cause random components to short out or fail. If you are sure that the button is original, and then have ensured clean connections, honestly I would just stop there. Trying to track down whatever else might be causing this is just a time sucking rabbit hole. Its not worth gaining a secondary function on your phone.