All Secret Codes Of Samsung Galaxy S21, S21 Plus & S21 Ultra (Hidden Menu)

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s21 series secret codes

Even though there are numerous Galaxy Android Smartphone series, the most successful one is none other than the "S" series. The quality and craftsmanship of Galaxy "S" series of Smartphones are making them standing out of the crowd. The latest Galaxy S21 5G, Galaxy S21 Plus 5G and Galaxy S21 Ultra 5G are no different.

They all comes in with marvelous specs like 6.8 inches Dynamic AMOLED 2X 120Hz, HDR10+ & 1500 nits bright touchscreen display having Corning Gorilla Glass Victus protection on top of it, 108 MP camera having laser auto focus, One UI 3.1, 512GB storage, 16GB RAM etc.

If you are here you maybe looking for;

  • All Secret Codes and Hidden Menu Of Samsung Galaxy S21 5G SM-G991B, SM-G991U, SM-G991U1, SM-G991W, SM-G991N and SM-G9910
  • All Secret Codes and Hidden Menu Of S21 Plus 5G SM-G996B, SM-G996U, SM-G996U1, SM-G996W, SM-G996N and SM-G9960
  • All Secret Codes and Hidden Menu Of S21 Ultra 5G SM-G998B, SM-G998U, SM-G998U1, SM-G998W, SM-G998N and SM-G9980

Now lets proceed to the secret codes list. However, before listing out the codes first lets get an idea about;


What are secret codes?

Secret codes are hidden codes on all Android Smartphones which will help you to configure or to get information which is not possible normally. It's always risky to play with secret codes without knowing what it will do to your phone, so be cautious.

Please note that these codes may not work on carrier locked phones unless their bootloader is unlocked. Also some codes may not work after some software/security update. So don't panic when some codes are not working.

How to execute a secret code on your Samsung Galaxy S21 Series?

To execute the secret codes jut type in the code as shown in the screenshot below and it will run automatically if it's compatible with your phone. Some codes will not work even if it's for your model, there can be many reasons like a locked bootloader, carrier lock etc. Even some firmware update/security updates results in blocking of some codes so don't panic if any of the codes are not working.

So as you can see in the above screenshot just type the code to your normal dialing keypad, and hurray! the code will just execute.

If still not confident please watch the below tutorial video.


All Secret Codes of Samsung Galaxy S21 Series

  • To Check IMEI number : *#06#
  • To Check Software and hardware info : *#12580*369#
  • To Check General Test Mode : *#0*#
  • To Check Battery status ADC, RSSI reading : *#0228#
  • To Check GSM status information : *#0011#
  • To To Check Audio Loopback Control : *#0283#
  • To Check Dump mode : *#9900#
  • To Check Diagnostic configuration : *#9090#
  • To Change USB Settings: *#0808#
  • To Check View SW Version PDA, CSC, MODEM : *#1234#
  • To To Check software version: *#1111#
  • To Check Audio Loopback Control : *#0283#
  • To Update Camera Firmware: *#34971539#
  • To Show Camera Firmware Menu: *#34971539#
  • To Check TSP / TSK firmware update : *#2663#
  • To Check Hardware Version : *#2222#
  • To Check Insert Network Lock Keycode : #7465625*638*#

If any of the codes are not working or you have any Galaxy S21 Series useful codes with you which are not published here, please feel free to post it in the comment section below so that everybody will benefit from it.

If "All Secret Codes Of Samsung Galaxy S21, S21 Plus & S21 Ultra (Hidden Menu)" tutorial really helped you, please give a like/share on social networking websites by using the below given buttons.


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