The Android device is complete, from 1.25 inch low resolution screen smart watch inPulse and WIMM One to the new Nexus 7 tablet computer which carries 1920 x 1200 resolution (323 PPI) of seven inch that had published a few days ago. But in order to show the normal App content on the machine, the Android system must support multiple pixel density content. The pixel density of 4.3 former systems support only from 20PPI (LDPI/ DPI) to 480PPI (XXHDPI/ ultra high DPI).
And after examining the 4.3 Jelly bean system source code, find the highest resolution support will come to 640PPI (XXXHDPI / ultra high DPI) pixel density. In view of the 480 PPI has a big loading for a mobile device, between the short term it’s unlikely to have a firm which is super HD for mobile devices (Ultra HD) of the screen, so it's not hard to guess that it is designed for Google TV UI, to support 4K television, providing the content displayed in the 4K on TV should have the quality with the font.
 


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