The above was a very bright street scene, and yet the camera managed to keep the color and exposure of the sky looking nice.
This arcade photo above was taken in our office, and the photo doesn't really do reality justice. It was much darker than how it appears in that photo, and with little noise, we can say the LG G2 does OK in low light.
The above is an HDR photo. As you can see, this is a very extreme case with very dark shadows and incredibly bright highlights. Still, the image looks good compared to the actual scene.
We love that the LG G2 seems to retain color in the sky, whereas other smartphones tend to blow them out and turn them whiter.