Sam Byford, The Verge:
The real attraction, though, is the 5-inch full HD Super LCD 3 screen — it’s truly a sight to behold. The Super LCD 2 seen in HTC’s previous flagship One X was arguably the best panel on the market, but we think its successor is the new champion. Color reproduction is excellent, the 440ppi resolution is astonishing, and the J Butterfly’s slightly convex glass makes the image look like it’s melting off the side of the phone.
4.x-inch 1280×720 smartphones have been bumped down a notch, top-of-the-line specs are now: 5 inches, 1920×1080 pixels, and in-cell touch (though I am not sure if the HTC J Butterfly has in-cell touch).