Screen resolutions of Android devices

Below I provided parameters of three Android phones I tested my Lines game with:

Android Version Screen Resolution Pixel Ratio DPI Screen Size
4.4? 320×496 (480×744/706) 1.5 156.89 52×80 mm
4.4? 360×592 (540×888/850) 1.5 160.19 57×94 mm
6.0 360×592 (720×1184/1136) 2.0 160.19 ~68×123 mm
N/A 800×1232 1.0 188.3295 108×166 mm

Screen Resolution column contains the information in the following format: <logical resolution> (<physical resolution>/<physical height available for applications in portrait orientation>.

DPIs with ‘~’ sign are measured manually because QT (or some Android API) provides incorrect Screen Size.

Main Lines Game toolbar looks differently depending on the pixel ratio, for example, on an Android tablet toolbar icons look smaller than on mobile phone:

Android Pixel RatioQT Quick ToobarQT Quick Page

2 Responses to Screen resolutions of Android devices

  1. dmitriano on June 27, 2017 at 9:41 AM:

    there is the difference between logical and physical DPI in QT : screen resolution 2560×1440, manually measured screen size: 0.595 x 0.338 m, calculated DPI: 1 / (0.338 / 1440) / 39.3701 = 108.212959316481, 1 / (0.595 / 2560) / 39.3701 = 109.283974600099. But QApplication::screens().at(0)->logicalDotsPerInchY() returns 96. (109.283974600099 / 96 = 1.1383747354177, 108.212959316481 / 96 = 1.12721832621334)

  2. superadmin on July 20, 2017 at 2:28 PM:

    My colleague has a monitor with resolution 3840 x 2160 (all the pixels takes 31MB)

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