Phone clicks the screen on its own randomly

My phone clicks the screen on its own randomly that I am unable to press any other button.
Because it touches the screen so fast, even the power button is not working that well at the moment.

I tried turning it off, turn it back on, and reboot but it still does not work.

I have unscrewed the back and removed the battery on my own, so I cannot even get any factory warranty.

Any help would be much appreciated.

Thank you!

Xperia L crashing randomly

My Xperia L started to do weird stuff about a month ago. Suddenly all apps would crash (unfortunately.. has stopped working). I have to pull out the battery to fix it and sometimes it wont start (bootloop or stuck on sony logo). I did hard reset, flashed stock ftf but nothing works. Sometimes it does this when it is under load and sometimes completely random. I bought a phone with a cracked screen after i bricked mine and it had a battery drain problem. After taking it to a local reapir shop they've managed to fix it but they told me they had to resolder something because of water damage. Is it possible this problem to be the result of water damage also?

Lg g3, started restarting randomly and now wont go past the lg logo without crashing

Hey guys
i always end up coming to the forums after i have tried to fix my phone for several hours
so far i have tried several times to revert it to stock and it seems to revert and boot, when i almost finish the setup (entering wifi, logging into google) it turns of and then attempts to reboot, it then gets to the lg logo and then crashes and so on, keeps going until the batterys flat
I have tried to install several different roms, tried another kernel, revert it to stock and it keeps happening!
Can anyone help me? I really need my phone!!!!!!

Phone died randomly and now won't power up/charge. Neither LED nor screen turning on.

My phone was running CM12.1 (a week old build). Obviously rooted and runs TWRP.

I texted someone and left my phone with the screen turned off for about an hour. When I tried turning on again, nothing happens. The battery was about 80% the last time I used it.

Things I've tried to get it to work:
1. Charging it with the wall charger. [Nothing happens. LED doesn't turn on, phone doesn't turn on]
2. Plugging it into my PC. [PC doesn't read it. LED/Screen unresponsive]
3. Tried vol down key + power to boot into the bootloader. [No response]
4. Tried vol down key + power, then plugged it into my PC without leaving the buttons and waited for a minute. [No response]

Can anyone explain what the hell went wrong with this? I just use my phone for calls/browsing/texting. Didn't overclock anything. It's been rooted since day 1 (2 years back), and I last installed the CM rom a week ago so it wasn't due to a bad flash.

Issue with Task Manager etc. popping up randomly

Having an issue that I'm pretty sure just started after the Lollipop update. You'll be doing something like playing a game and feel the Haptic vibration like a button is being pressed. At the same time the Task Manager randomly opens and closes. A restart resolves the issue for a bir but then ib commences again. Thoughts.....??