Won't turn on except Data recovery mode

Was using my phone like normal (was looking at battery in settings app) when the screen turned off. The backlight was still on, but there was no image and the touch screen wasn’t working.

Pushing the power button turned it off (with the lock sound playing) and was able to turn it back on and unlock it with the finger print sensor.

Did a hard restart (reset) by holding home and power button for 15sec

Phone turned off and didn’t turn back on

Pluging into power doesn’t show anything nor turn it on

Can plug into PC and enter Data recovery mode by holding home and power for 15sec. Updating firmware via iTunes doesn’t fix it

The screen and battery was replaced before I got it. I started having issues with it after about a month with it sometimes not getting reception (would show 4G and full bars but no connection to internet, texts or calls). Swapping sims to old phone would work fine

I’ve opened it up to find one missing screw and two lose screws. I don’t see water damaged or the liquid indicator. But there was dust all around the edges on the inside

Phone is mostly backed up as far as I’m aware. Tho I would prefer not wiping it if at all possible