Density isn't everything. A good 4800dpi printer probably prints at 300 or 600dpi most of the time, unless specifically tell it to do a high quality print. In a

Density isn't everything. A good 4800dpi printer probably prints at 300 or 600dpi most of the time, unless specifically tell it to do a high quality print. In any case, it's not often that one digs through their printouts with a magnifying glass to be able to tell the difference. For a phone or tablet, I would trade pixel density above 300ppi for a higher framerate or better battery life. My Nexus 4 has choppy animations, and that is much more annoying than being able to see pixels.