Chosen Solution

Hi I have replaced my iphone 6 screen. All went well but when removing the silver LCD back plate i had slightly torn the flex cable which was stuck to the lcd cracked screen. I went ahead and finished the phone but the finger ID and password key no longer works, so my question is if i go ahead and replace the long flex cable will this work or will it mess up the finger ID?

Depending on which flex is actually torn, either the interconnect or the Touch ID is where your solution will be. If the cable on the LCD Plate is torn, you’re ok. (iPhone 6 LCD Shield Plate with Sticker and Home Cable) (Take a look here to see if the cable is along this part) But, if the flex on the Touch ID is torn, you’re going to have much more of a headache. The reason being is that the cable that connects the board along the LCD shield can be ripped and replaced with no issues. But, if the Touch ID flex is torn, Touch ID will never properly work again as its individually tied to each phone. That said, you can replace the Touch ID and get the home button functionality back, but the biometric aspect will not fully function again without the original part.

change the button of your original screen to your news screen will work.