Why are some components failing after screen replacement?

Hello all,

The other day I replaced my phone screen, iphone 6 (64). Everything was well, all that i replaced was the digitizer and lcd. All other parts were switched over to the new screen. I have done this before and never had a problem. This time Touch ID has failed. When in settings my fingerprints are lost and cannot add a new one. Just now it seems that my flash, camera, and speakers are not working. What could have gone wrong?

Please help!

Thank you,

Brandon