Why is my touchscreen not working?

Don’t know if this helps or not, but I’m having this issue with my moto g7. It some times goes dead to touch on the right side of the screen. I did get it working again though and started playing one of my apps. This app shows where you are touching the screen and I noticed that while playing the app the whole right side of my screen would light up as if my finger was touching every part of that screen. It seemed to be right on the edge when I had put my screen protector glass.

So, now for some outlandish guesses. It might be that the screen is not working since it thinks that every point on the right side is being touched all at once. Phones are programmed to ignore several touches all at the same time in larger area thinking that the person has put their hand on the side or that it is in a pocket. So, when you go to touch that side of the phone it’s just one more touch that is to be ignored. Second, since the touches were happening on the edge of my screen protector it could be that some sort of substance (oils, dirt, etc.) that just happened to be able to react with the screen was trapped along that side. After cleaning that side I haven’t had anymore troubles but now my screen protector has little air bubbles on the side of it so I’ll probably have to replace it.

As for the way I got it working again, I used the power volume down button options but instead of recovery mode I used factory mode. I figured since I couldn’t even enter my pass code to get in I might as well reset my phone. I was pleasantly surprised that it only reset to factory settings and didn’t erase any of my stuff or even my pass code.

UPDATE (Jan 30, 2020)

Found the answer to my Moto G7’s problem of the right side not responding. While watching a video of how to repair the screen I noticed that the connector for the screen to the phone was in the middle right hand side of the phone. I decided to see if the connector was not connected right so I applied pressure on the area of the screen where the connector is. My phone’s right side touch screen ability immediately began to work again.

Conclusion, my screen has a poor/loose physical connection to the phone. since I have never replaced the screen this must be a manufacture defect. Also, if it happens with a new phone, if you replace the screen, make sure the connection is in secure since it seems Moto’s have temperamental connectors.