Screen Reacts to Touch But Does Not Unlock Phone

Hi.

First-time inquirer…long-time reader. I’m a novice unpaid iPhone repair guy, having replaced 20-30 screens over the past several years. I’ve made bonehead moves, like not disconnecting power before replacing the LCD digitizer.

But this time, I believe I made a clean replacement of a screen for an iPhone 6s. After replacement, the new screen did not respond at all to touch. Since the old screen was functional, I returned all components to the original LCD, thinking I had a bad new screen.

After putting it back as before, the old screen will not respond fully to touch. By that I mean I can attempt to unlock the phone by pressing the key pad, but the privacy-protected digits would not light up. Not only that, but the code i KNOW is correct will NOT unlock the phone. When trying to power down, the slider will FINALLY power down after multiple tries…most of the time.

In other words, I can’t get into the phone. I’ve tried rebooting but nothing. I have NOT tried a hard reset since I do not know if all the data is backed up from this phone or not. Any other suggestion?

Thanks!

JavaMan