I used LG G4 few months. It was a nice mobile with good features. One thing which I would like to point out is the camera quality, both front and back camera. The clarity is really good. I would rate 9/10. The pictures were really nice. The quality of the image was also really good. The was an another thing in the pucture is that while you zoom it, even the smallest detail in the picture can be viewed clearly by enlarging it.
The sound and video quality was excellent. It was really very clear and loud.
There will be a disadvantage for anything, so one problem which I faced was the mobile would hang very soon. All of a sudden all the applications get closed. I had to reopen it again. Except for that one thing I really liked it!