Android Screen Resolution

320dp: a typical phone screen (240x320 ldpi, 320x480 mdpi, 480x800 hdpi, etc). 

480dp: a tweener tablet like the Streak (480x800 mdpi). 

600dp: a 7” tablet (600x1024 mdpi). 

720dp: a 10” tablet (720x1280 mdpi, 800x1280 mdpi, etc). 

  

Android: Screen Densities, Sizes, Configurations, and Icon Sizes 

1. Definitions 

• resolution = number of pixels available in the display, scale-independent pixel = sp

• density = how many pixels appear within a constant area of the display, dots per inch = dpi

• size = amount of physical space available for displaying an interface, screen's diagonal, inch

• density-independent pixel = virtual pixel that is independent of the screen density, dp