The back side of the smartphone looks fundamentally the same to the LG G3, keeping same type of power button, speaker and flash locations. Anyhow, we have to note a thing is it seems to have a stylus (or perhaps a antenna) at the top left of the rumored G4. Moreover, the design of the camera sensor looks different and it is like curved square shape. Likewise, the power button has transformed from a circle to a greater degree an curved rectangle.
Moving onto the software side, the handset looks to hold quite a bit of what it began with last year’s custom interface signals in the G3, however changed a bit for the progressions in Android 5.0 Lollipop. The theme of the icons looks to keep things serene with non-poppy hues for system applications and rounded toggle switches are still there.
Remember that this is a leak and accordingly, it ought to be brought with a strong grain of salt. Nothing about the LG G4 is official until we get notification from LG.
s3rv1cet3ch (XDA Developers)