Chosen Solution
So I replaceed the screen of a shattered iphone 6. worked BUT i accidently busted the metal back plate htat had a ribben cable to hook up the touch ID. the phone was dead during this process. when i got the new back plate, i dissassembled the screen and such and replaced the back plate and hooked everything back together. now the screen nor the phone will turn on or even connect to my mac. the second time tho, the iphone was charged…and i forgot to disconnect the battery. did I screw up the phone? is it DEAD? is there anything i can do?
My first suggestion would be forgetting the screen and display for a moment. Lets figure out getting power first. If you have a multi meter, google how to check battery voltage. Also look up checking voltage at the connector to see if it is sending voltage to charge battery. Post results and we can try a few things one at a time to minimise confusion.
I’d be happy to try and help but a bit confused by the way you described the issue. Can you try again and rephrase it?
Try a new backplate or boot up your phone whiteout the Touch ID cable connected to the logic board. I think the long flex cable is damaged.
