Some extra info edits

Higher DPI range
Extend the dpi range to complete the table, as you can see here xxhdpi
goes from 480 to 639 than becomes xxxhdpi at 640
http://developer.android.com/guide/practices/screens_support.html
Support the devices that use xxxhdpi (e.g LG G3) or people who use a
modified DPI higher than 480 in build.prop to get rid of the "unknown"
value being returned

And got rid of that green text try red