Display Tester

Display Tester

100,000 - 500,000 downloads

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With this test tool you can test your device's LCD/OLED screen. It is designed to allow full screen testing in Jelly Bean/ICS/Honeycomb devices by hiding the soft keys.

-= Free features =-
◆ Dead pixel test: detect "dead pixels" by displaying a series of solid background color pages
◆ Color tests: contrast, gradient (banding) and saturation tests
◆ Gamma calibration tests (grey/red/green/blue)
◆ Viewing angle tests (This is useless for OLED displays)
◆ Multi-touch test
◆ Display performance tests
◆ Repair burn in - scrolling black & white bars
◆ Display measures info: screen size, GPU type, dpi, density-independent pixel size, OpenGL 1.x info, pixel format
◆ Real world pictures for reference and comparison
◆ 4-color gradient test with orientation change correction (Android 2.2 and higher)

-= Pro features =-
◆ No splash screen
◆ Repair burn in - noise (white, b&w, red, green, blue) => Only Android 2.2 and higher!
◆ Pixel format & dithering tests
◆ Built-in font styles test
◆ Manually DPI measurement
◆ Color charts
◆ Touch screen dead spot tester

-= Soft key hiding in ICS/Honeycomb/JellyBean =-
Use the preferences menu option for this or simply long touch the display during a test is running.

-= Gestures =-
◆ Slide left-right: change test image
◆ Slide up-down: change brightness
◆ Long touch: switch between full screen and normal screen (Android 3.0 and higher)
◆ Double tap: hide or show the test specific settings dialog (if available)

When the soft keys are hidden it is not easy to advance to the next screen: First tap to make the buttons appear, then a quick swipe for the next screen before the buttons are hidden again.

If you like this app, please consider purchasing the Pro version to support further development.

If you are having a problem or you have a suggestion about a missing feature, the ONLY way it will get done is if you email me! :)

Tags: screen, display, screen test, screen tester, check, checker, burn-in, burn in, broken pixel, dead pixel, bright pixel, defective pixel, stuck pixel, defect, faulty, identify, LCD, SLCD, LED, OLED, AMOLED, screen burn, hardware, Galaxy Nexus

Tags: display tester, softkey show and hide, display tester serial number, jelly bean softkey hide, galaxy nexus burn in fix, burn ics softkey, ics softkeys height, hide ics soft key, display tester pro unlocker, test display code.

Recently changed in this version

◆ Minor changes and bug fixes

◆ Brightness change with up-down sliding possible in almost every test
◆ Double tap hides/shows the test specific settings dialog (if available)
◆ Long touch for full screen mode is possible in almost every test
◆ Gradient test fully rewritten
◆ Bug fixes

◆ New user interface

◆ Touch screen dead spot tester added - Pro version only

◆ Android 4.2 changes
◆ xxhdpi icon added
◆ Display size detection changed

Comments and ratings for Display Tester
  • (69 stars)

    by John P Coates on 05/04/2014

    what can I do to correct errors that this app flags up? For example, the Gamma Test says that gamma should read 2.2 but mine is 2.0. That's just one example. Otherwise it's beautifully put together.

  • (69 stars)

    by prashant patil on 29/03/2014


  • (69 stars)

    by Zhou Alvin on 23/03/2014

    Very good

  • (69 stars)

    by SHAHID DILBAR Manj on 22/03/2014


  • (69 stars)

    by Michael Padilla on 08/03/2014

    I like this :) !!!

  • (69 stars)

    by Talmud Beingsen on 04/03/2014

    This fixed a small blue blotch (about the size of a cigarette burn) in the screen of my Nexus 7. It had been driving me nuts for almost a year! Thanks to this app I can now crank the brightness all the way up and not be bothered to death by a screen defec

  • (69 stars)

    by John Kuntz on 01/03/2014

    This utility is straightforward and simple to use, though it performs complex and thorough diagnostics on your device's display/touchscreen. Worth the download.