Chosen Solution
Touch screen not working even after DFU hard reset Update (12/27/2022) Since Verizon is giving me a trade-in value for the SE, I’m letting it go. No need to spend my time repairing a 6-yr-old phone that will soon not be able to accept IOS updates. But thanks to everyone that offered solutions.
@nadineh, There are a couple of things to try out, but you will have to open the phone back up again on 2 and onwards; Shine a flashlight at an angle on the screen and see if you can make out an Apple logo (backlight check)Disconnect battery, then screen and inspect all connectors with a magnifying glass, for damageClean connectors using >99% isopropyl alcohol and let dry a minute before connecting screen then battery If you can make out a logo or image when testing 1, you have a busted backlight. Did you disconnect the battery prior to disconnecting the screen, first time around? Leaving the battery connected when disconnecting the screen will often kill the backlight. When checking the connectors, even the slightest damage can be enough! Cleaning and reseating the connectors often solve the issues with no touch, because a tiny spec of dust is hindering full connectivity. Let us know how you make out ;)
You may have damaged the screen when taking the phone apart, which means you will have to replace it. There is also the possibility that the display connectors are not seated correctly.
