Why is my LG G3 phone acting so weird?

[AC Question]

My phone was dropped and a little crack is now in the phone and ever since than my phone has been acting weird. its been turning off by itself, playing music at random times, my home button is flinching. I don't know what to do im so aggravated.

 

[B. Diddy]

Welcome to Android Central! Does it persist after a reboot? If so, try Safe Mode, which temporarily disables all 3rd party apps. https://support.t-mobile.com/docs/DOC-11934

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.

 

[bosn45]

I have two of these acting incredibly weird. One, when waking from sleep and on boot, the left half of the screen is on the right side. And vice versa with the right on the left! I found no help anywhere so I did an experiment. I pulled both motherboards and swapped them out to see if the problem went with them. It did not. My conclusion led me back to ebay to get new LCD assembly for one of them. I'll let ya know!