Im seeing similar posts on this.
Just today, my G3's screen started acting up. It will work as normal for a minute or two, then it will flicker and begin a gradual fade until it goes completely black. It still functions somewhat, but you cannot see anything on the screen. Once I press the power button, it will go to sleep mode, then I can restart the screen.....only to repeat the process.
Ive run my phone through troubleshooting to no avail, and its getting worse. Also, the phone was not wet, damaged, or bumped in any way at the time of first occurance, nor at any point before, or after.
thanks in advance.