Touch screen not responding on my LG Optimus smart phone, can not unlock screen or answer calls

SOURCE: touch screen on lg voyager stopped working

Does it have an after market plastic cover? If so they sometimes touch one part of the screen making it non responsive. On a day it does work try recalibrating the screen.

SOURCE: broken screen on lg dare

ive had a similar problem... but what i did is i looked at what the insurance does cover... since it doesnt cover water damage.. defect the phone in some way that the insurance will cover. its only if you're in desperate need. there is no way to fix water damage... but i know PLENTY of tricks to soak water out of the phone

SOURCE: My L.G. Viewty's screen goes dead.

i had the same problem with my LG viewty. its so stupid why, you want to kick yourself.

on the perimeter of the screen, you see a tiny gap. in there are the digitizer for the screen. the screen works like a grid, one on the X axis and one on the Y axis. its not a software issue nor a screen. just a design flaw.

get a piece of copier paper. fold it nicely, and use the folded edge, run it in the perimeter of the screen and dig out all the ****, dust, dried sweat out of there. don't dig too deep or use compressed air. just dig it out with the piece of paper. you will see there is a lot of debris lodged in there. once its out, try your phone again and it will work. worked for me. i quickly bought another screen protector and now its my nice backup phone. i bought the sony ericsson X1 because i thought it was totally non usable. i guess not.

SOURCE: lg bl40 screen works mostly fine.

I had the same problem. The reason was that I had bought a cover for the phone and the cover would make the proximity sensor turn on and so the screen would be locked. If you've bought a cover for it, this may help.

SOURCE: LG CU920 VU Touch Screen Not Responding

I had the same issue and was pissed, not to mention i didn't have a warranty and it was only a couple months old. I actually bought another phone and because I had nothing to lose, took my phone apart and replaced the touchscreen myself for about $30. If you have ever changed out a PC part, you could replace this screen. It's not really that difficult and there are guides out there. The screen itself is just a thin piece of plastic that lays over the lcd screen and is kinda "glued" into the frame of the phone. If you look at ur phone and follow the frame around, that's the piece ur replacing - but you have to disconnect all the wires from the inside. Now mines works like a charm -- and I'm stuck with two phones :~( PS: STOP USING THE STYLUS!