Light is effecting my touchscreen?

[leif2]

I've had this G4 for a little while now. I bought it off Amazon. I paid a little more for the ad-free version. I'TS running Android 7.0 which came from OTA update from my Verizon cell phone provider but I don't think any of this pertains to my problem which is that if I'm in a room with moderately bright lights or outside in sunlight the screen will do rapid Phantom presses continually which only alleviate after I get out of the light turn the display off and then back on again. I don't know the science behind this problem but does anyone think if I bought and put a screen protector on this phone with that have a chance of letting me use this phone in the sunlight? If so can anyone recommend a particular model or type of screen protector? There appears to be a small crack on the phone in between the light sensor and the camera that goes down just barely into the visual screen from the bezel. It seems possible this crack is what's caused this light sensitivity issues since I only notice the crack after the touch screen problems.