This mobile may not have the latest processor, biggest battery or bigger ram; what this phone has got right is pure lag free and problem free experience. I am using this mobile since last 8 days.
Battery easily lasts for the day and then some more.
Call quality is clear to both caller and callee.
There are no heating problems.
There are no software glitches.
There are no wifi/network issues.
This mobile is going to get Android N update.
Obviously, this mobile is not meant to play heavy graphics games, considering that it plays Temple run, Subway surfers smoothly. No lag whatsoever. There are a couple of nitpicky things tough. First one being, the display may be little bright for you to use at night ( lowest intensity on g4 play = g2 on lowest) , other being this mobile does not feel that premium but with a good case you may get that feel.