Xiaomis new concept phone has a waterfall display on all four edges

Xiaomi has announced its latest phone concept: a “quad-curved waterfall display.” This means that the unnamed phone’s screen not only has deep 88-degree “waterfall” curves on the left and right sides, but on the top and bottom as well, leaving no room for ports or buttons. Xiaomi says this is intended to “extend the limits of the display to infinity” and enable “a true, port-free unibody design.”

The obvious question is how that could possibly work at the screen’s corners, and based on the promotional imagery it looks like Xiaomi is simply leaving them blank with small, rounded cutouts. Not quite infinity, then, but still a neat trick — although for people who already don’t like the comparatively modest curved displays on phones like the...

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