Android:Screens

lastmod 2018-08-17created 2016-05-264 edits

Smartphones

HVGA smartphone.
- RESOLUTION: 320px(320dp), 480px(480dp)
- DENSITY DPI: mdpi, 160 dpi
- SCREEN SIZE: normal
- Ex: Optimus One
WVGA smartphone.
- RESOLUTION: 480px(320dp), 800px(533dp) or 854px(569dp)
- DENSITY DPI: hdpi, 240 dpi
- SCREEN SIZE: normal
- EX WVGA800: Nexus One, Galaxy S, Galaxy S2
- EX WVGA854: Motorola Droid, XPERIA X10
qHD smartphone.
- RESOLUTION: 540px(360dp), 960px(640dp)
- DENSITY DPI: hdpi, 240dpi
- SCREEN SIZE: normal
- EX: Atrix, Evo 4G
WXGA720 smartphone.
- RESOLUTION: 720px(360dp), 1280(640dp)
- DENSITY DPI: xhdpi, 320dpi
- SCREEN SIZE: normal
- EX: Galaxy Nexus

7-inch tablet.
- RESOLUTION: 600px(600dp), 1024px(1024dp)
- DENSITY DPI: mdpi, 160 dpi
- SCREEN SIZE: large
- EX: Kindle Fire, Nook Tablet
10-inch tablet.
- RESOLUTION: 1280px(1280dp), 800px(800dp) or 720px(720dp)
- DENSITY DPI: mdpi, 160 dpi
- SCREEN SIZE: xlarge
- EX: Galaxy Tab 10.1, Motorola XOOM

Galaxy Note.
- RESOLUTION: 800px(400dp), 1280px(640dp)
- DENSITY DPI: xhdpi, 320 dpi
- SCREEN SIZE: ??? (Gingerbread)
7-inch Galaxy Tab (2010).
- RESOLUTION: 600px(400dp), 1024px(682dp)
- DENSITY DPI: hdpi, 240 dpi
- SCREEN SIZE: large(Gingerbread)
Nexus 7
- RESOLUTION: 7-inch 800px(600dp), 1280px(961dp)
- tvdpi density ¹

Notes on the Nexus 7.

Devices with a screen like the Nexus 7 have a fairly high density, so scaling is hardly noticeable.
When Android picks a bitmap to scale, it generally chooses the bitmap with the higher density. For tvdpi screens, it scales down the hdpi resources that most apps include to support hdpi phones.
The Android tablet UI uses icons larger than regular app icons. To do this, it uses icons of a higher density. Activity.getLauncherLargeIconDensity() returns the density to use.
App icons are a key element of a crisp screen, so the density one step higher is chosen so that the designed icons can be used without scaling. (mdpi->hdpi, hdpi->xhdpi, etc.) In the launcher and wherever app icons are used, tvdpi screens are treated as hdpi density and the designed size is used.

320dp smartphones, 360dp smartphones.
400dp tablet phones (as of 2011, released only by Samsung; the Galaxy Tab (2010) is 7 inches but is classified with the Galaxy Note by dp.)
600dp 7-inch tablets.
720dp(800dp) 10-inch tablets.