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    Samsung Galaxy Grand Duos Secret Codes

    There are various secret codes and options inside your mobile about which you may not be aware. Here in this article, we will be talking about many such secret codes of Samsung Galaxy Grand Duos smartphone which we can use to access hidden tools and information about our phone.

    Secret Codes for Samsung Galaxy Grand Duos

    Here, We are going to show you how to access the internal function of Galaxy Grand Duos for testing the various hardware parts of your phone, if they are working properly or not.

    With the help of this secret code you can test LCD, vibration, camera, sensor (accelerometer sensor, proximity sensor, magnetic sensor), touch screen, speaker, subkey, etc… if you have any hardware problem with your Galaxy Grand Duos you can identify with this code if it is working or not to do this follow the steps below.

    First of all, open your Keypad (where you dial phone numbers)

    Then dial the secret code *#0*# 

    Now you will get a screen with the title LCD TEST and below that you have lots of options to test various hardware parts of your phone such as speaker, sensor, LCD, etc.

    • To go back use the right physical button.
    • While testing the touch you have to touch and mark all the squares (the back button does not work here)

    Other useful Secret Codes tested on Samsung Galaxy Grand Duos

    1. *#06#

    Check IMEI number of Phone

    2. * #1234#

    Check software version of Phone (AP, CP, CSC). Learn more HERE

    3. *#12580*369#

    To check Software and Hardware information (along with Date of Manufacturing)

    4. *#0228#

    Battery status (ADC, RSSI reading)

    5. *#7353#

    Quick Hardware Test (Touch, Sensors, Speaker, Ringer, Camera, etc)

    6. *#2663#

    Check Firmware Version of Samsung Mobile (This code will not work on Replica, so you can check if phone is Genuine or Fake)

    7. *#7780#

    Factory Data Reset Samsung Galaxy Grand Duos (Soft Reset)

    8. *2767*3855#

    Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)

    View Step-by-Step Guide about Factory Resetting your Samsung Galaxy Grand Duos.

    Also, Check out our Full Extensive list of Samsung Mobile Codes.

    Disclaimer: Some of these codes are intended for experienced users. Do not proceed with any option unless you know what you are doing.

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    43 Comments

    1. Thank you very much, its great but my galaxy grand speaker got low one month back and I got repaired with samsung service but now again the same problem has accured so please share your idea.

      Regards
      Diwakar.

    2. My Samsung Grand Duos works well.But I can't use my extra SD Card ringtones in it.Can anybody say how can I do it.

      • Hi Thank you for the codes ..my Galaxy grand Quattro touch screen is not working some times if i want to unlock please advice me

    3. The Secret Codes are not working in my Samsung Grand Duos.Only on one time I found them working but later not working Can anybody say how that happened and what can I do?

    4. Firstly check your sub key by dialing *#0*#
      then reboot your device after removing the battery
      If still not working then you must take it to service center as this must be a hardware fault

    5. Firstly check your sub key by dialing *#0*# 
      then reboot your device after removing the battery
      If still not working then you must take it to service center as this must be a hardware fault

    6. Mr. Pramesh it seems to be a hardware issue so its better to give it to expert hands
      You might try to reboot the device

      you can also install some widgets which will lock your device

    7. Just close the application you opened and try to clear the ram will make it a little faster
      Try not to install too much applications on your mobile
      Do a factory reset if it is hanging a lot, but remember to backup your important stuff

    8. Hi I hav voice calling problem with galaxy grand duos.gsm calls r ok.but when I call in skype and viber for others r not able to hear me but I can hear them very clearly.i unistalld all the software many times but still iam facing the same issue.could u ps help me to solve this problem.

    9. Hi I hav voice calling problem with galaxy grand duos.gsm calls r ok.but when I call in skype and viber for others r not able to hear me but I can hear them very clearly.i unistalld all the software many times but still iam facing the same issue.could u ps help me to solve this problem.

    10. hello Darpan
      Type this in the phone dialer to enter vibration test mode *#0842# and check it
      If it is still not working then this must be a hardware problem and you must take it to nearest service center and get it repaired

    11. hello Ashok
      Type this in the phone dialer to enter vibration test mode *#0842# and check it
      If it is still not working then this must be a hardware problem and you must take it to nearest service center and get it repaired
      (you may try to restart your device or change vibration settings)

    12. The home screen button is not being displayed on my smasung galaxy grand duos. .. what do I do to solve this problem… plz someone tell… humble request!!

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