At The Verge, Vlad Savov on the Samsung Galaxy S6 Edge:
I am not, however, convinced that the S6 Edge is the future. Despite my best intentions and great excitement, I have not been able to shake the initial impression that the Edge is ergonomically busted. In my time using the handset, I’ve consistently pressed on-screen buttons with my holding hand — because the metal sides are so thin they are almost nonexistent — and found myself growing anxious about holding it just the right way. Yes, it’s very much like the iPhone 4 Antennagate debacle, though unlike that hardware issue, there’s a software fix that Samsung could perform to rectify things: just make the side screens insensitive to touch input when the display is on.
The Galaxy S6 Edge also doesn’t play too nicely with Google’s Material Design. Samsung has my eternal appreciation for following Google’s lead in moving to a cleaner, more minimalist interface, but Material Design emphasizes flatness and geometric regularity, which the Edge’s warping side screens disturb. They create a sort of vignette effect on white pages and are a hindrance rather than a help when editing photos.