jagwap
1000+ Head-Fier
HTC 10 dynamic range is actually 93db according to GSM arena
Decent for a phone
If you are really concerned that much about dynamic range invest (considerably less money) in a Chord Mojo and a cheapo phone. 125db
I think gsmarena are not measuring the quad dac on V20 or are using 16bit data. I wouldn't use their data for any useful comparisons if I were you. They don't even list output voltage or power. The difference between loaded and unloaded frequency response is vaguely useful for determining the amp performance.