DxOMark Mobile has published their report on the HTC One M9, HTC’s latest top-end smartphone. The new model is a touch smaller and thinner than its predecessor, the One M8, but under the hood HTC upgrades the 4MP “ultrapixel” 1/3″ BSI sensor of the predecessor to a larger, higher resolution 20MP 1/2.3″ BSI CMOS sensor. The F2.2 lens provides no optical image stabilization, but the M9 is the first One model capable of recording 4K video. Read our report on DxOMark’s findings