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How to access the Galaxy S3 secret service menu

The Galaxy S3 has some cool hidden features that let you become a power user in ways far beyond what you would think. We've already shared some simple hidden features of the Galaxy S3 but this time, we're sharing a built-in service menu that lets you test everything from your S3's pixels to your sensors and touch responsiveness. If you're the kind of nerd who likes to get under the hood of your smartphone, this is the menu for you.

AndroidPIT Galaxy S3 Side
The Galaxy S3 still has lots of life in it, but here's how you can run your own diagnostic tests on it. / © Samsung

So, how do you access the service menu on a Galaxy S3? The diagnostic tool is primarily meant for service technicians, so it's easily available but not widely known about. Just go to your dialer and enter the following code to bring up the diagnostic tool: *#0*#

AndroidPIT Galaxy S3 Service Menu 0
Just type *#0*# into the dialer to bring up the secret service menu screen (right). / © AndroidPIT

This will bring up the above service menu screen, with options ranging from color floods (so you can easily isolate dead pixels on-screen), to speaker performance, LEDs, cameras and vibration. Some of it is not exactly going to be useful on a daily basis, but for a one-off novelty it's kinda cool to see (and it's a nice little prank to play on a friend's phone too). Plus, if anything on that list starts causing you problems, you know exactly where to go to test it for yourself before shipping your S3 off for repair. Here's some of the tests in action.

AndroidPIT S3 Service Menu 1
You can test all of your sesors (left) and your display's dimming (right) / © AndroidPIT
AndroidPIT S3 Service Menu 2
Galaxy S3 touch responsiveness test (left) and low frequency LCD test (right) / © AndroidPIT

Check out our list of secret Android codes (there's a link at the bottom for Samsung-specific codes too).

If you have root access and want to delve a little deeper into the internal settings of your Galaxy S3 you can also try out a cool little app called Note 2 Hidden Settings which simply places a menu skin over some of the other internal settings to be found in your Samsung device. It was made for the Note 2 but it works fine on other devices like the Galaxy S3 too.

Note 2 Hidden Settings Install on Google Play

Have you ever tried to repair your smartphone problems yourself? Did you know about service menus and Android codes before, such as on the Galaxy S3?

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  • I already knew several things about the "behind the scene " type of thing on my S3, and I haven't tried this nor the codes yet, but can't wait to.


  • I have the sch-s968c s3 and that code isn't working. any idea why not?


  • Jiří Dec 2, 2014 Link to comment

    The Service Mode one, not diagnosis tests (*#0*#) like shown above, can be accessed by dialing: *#197328640# and wait. ( on galaxy S3 )


  • I cannot get that code to work on my s3. is this available for all carriers or do some have it disabled. once I enter *#0*#, do I have to push anything else or wait for a minute.


    • red Sep 16, 2014 Link to comment

      after you enter *#0*# press the green phone icon and it should launch right away - mine did


      • Jiří Dec 2, 2014 Link to comment

        The Service Mode one, not diagnosis tests (*#0*#) like shown above, can be accessed by dialing: *#197328640# and wait. ( on galaxy S3 )


    • Jiří Dec 2, 2014 Link to comment

      The Service Mode one, not diagnosis tests (*#0*#) like shown above, can be accessed by dialing: *#197328640# and wait. ( on galaxy S3 )


      • Hey you make no sense...
        The service mode one, not diagnosis test.
        Wtf does that even mean.
        Btw *#197328640# didn't do a Damn thing...


  • does it not work with custom rom?


  • K. Koenen Apr 11, 2014 Link to comment

    Same code for note 3

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