LG's flagship smartphones have quickly increased in quality over the years, and the G4 marks yet another clear evolution for the other large Korean electronics firm.

We have a review unit (with gray plastic cover - these photos are of other devices) in hand now, and I can say that the G4 is categorically an improvement over the G3 in some clear ways, but others we'll just have to wait and see on.

The first thing that struck me about the G4 (aside from the leather-backed variants) was the brightness and vividness of the display. It's clear this new "quantum" IPS panel is a very significant upgrade over the 2K IPS in the G3 in terms of brightness and contrast.

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