Do I need to replace my screen?

I recently replaced the battery in my iPhone 7. Everything worked fine, and as I was following the battery calibration instructions and had it charging, the screen would no longer turn on. The haptic feedback on the home button works, so I know it is on.

I've tried a new battery, cleaning all the screen contacts, reseating them, etc. The only thing I can think of is that the flex cable of the screen somehow got damaged. It's weird since the phone was sealed and working.

Any other thoughts or is my best course of action a new screen?