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Editorial Team
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Asked: 2026-05-31T20:31:37+00:00

On many Android devices you can get into a secret settings menu from Phone

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On many Android devices you can get into a secret settings menu from Phone app by typing in

*#*#4636#*#*

https://web.archive.org/web/20140205002205/http://technology-headlines.com:80/2010/09/17/4636-android-secret-codes/

There are also some other codes.

Is it also possible to open this stuff programmatically?

I’ve tried this:

Intent intent = new Intent(Intent.ACTION_CALL);    
intent.setData(Uri.parse("tel:*#*#4636#*#*"));
startActivity(intent);

But it just tries to initiate a phone call and of course fails, hangs up and closes the Phone app.

EDIT: The phone *#*#4636#*#* gets saved to my Contact list as "Unknown" but the call just fails. In fact, the secret code only works when you type manually on buttons in Phone app without pressing Call in the end. Is it probably just a hidden feature of Phone app which has nothing to do with calling?
If so, one could open the Phone app programmatically and simulate typing on the buttons.

According to this post
Programmatically press a button in another appplication's activity

this should NOT be possible because if any app on non-rooted phone could just start other apps and press something there, it could take over control of the whole device and do bad things.

Here are some more details but I guess the post is a bit old and even if it worked it may have been changed in current Android versions:
http://mylifewithandroid.blogspot.de/2009/01/generating-keypresses-programmatically.html

So, no easier way to enter secret code?

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1 Answer

  1. Editorial Team

    Is it also possible to open this stuff programmatically?

    Yes:

        Intent in = new Intent(Intent.ACTION_MAIN);
    in.setClassName("com.android.settings", "com.android.settings.TestingSettings");
    startActivity(in);

    You just need to watch logcat output to learn what this magic combination actually opens:

    I/ActivityManager(31362): START {act=android.intent.action.MAIN
    flg=0x10000000 cmp=com.android.settings/.TestingSettings} from pid
    4257

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