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Secret codes for Samsung Galaxy A21s

  Mobiles >> Samsung >> Samsung Galaxy A21s

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All Samsung secret code

Samsung secret codes

*#06# - IMEI (International Mobile Equipment Identity) number
*#1111# or *#9999# or *#0837# - Software version Samsung Galaxy A21s.

*#0808# - This code modify the USB settings.

*#2222# - Display Hardware Version.

*#9090# - Display diagnostic configuration and RAM Dump

*#1234# - View SW Version PDA, CSC, MODEM, Firmware version

*#0*# - Show Advanced Test Menu. Samsung Galaxy A21s.

*#2663# - TSP / TSK firmware update

*#12580*369# - Open information about Android software and hardware.

*#0283# - Audio Loopback Control

*#0228# or *#9998*288# or *#9998*0288# or *#8999*228# - Battery status ADC, RSSI reading

*#0011# - ServiceMode Samsung Galaxy A21s.

#7465625*638*# - Insert Network Lock Key Code

*#34971539# - Camera Firmware Menu Samsung Galaxy A21s.

Other secret codes that may work on other firmware and android versions.!



*#0001# - Use this to the Show Serial Parameters of your handset.

*#9125# - Activates the smiley when charging.

*#0523# - LCD Contrast.

*#9998*246# - Program status.

*#9998*289# - Change Alarm Buzzer Frequency.

*#9998*324# - Debug Screens.

*#9998*364# - Watchdog

*#9998*377# - EEPROM Error Stack - Use side keys to select values.

*#9998*427# - Trace Watchdog.

*#9998*523# - Change LCD contrast.

*#9998*544# - Jig detect.

*#9998*636# - Memory status

*#9998*746# - SIM File Size

*#9998*778# - SIM Service Table

*#9998*785#- RTK (Run Time Kernel) errors - if ok then phone is reset

*#9998*786# - Run, Last UP, Last DOWN.

*#9998*837# - Software Version.

*#9998*9266# - Yann debug screen (Debug Screens).

*#9998*9999# - Software version

*#9125# - Smiley

*#8999*636# - Display Storage Capacity

*#8999*778# - Display SIM Card Information

*#8999*782# - Show Date And Alarm Clock

*#8999*786# - The Display During Warning

*#8999*837# - Samsung Hardware Version

*#0523# or *#8999*523# - Display Contrast

*#8999*638# - Show Network Information

*#8999*9266# - Display Received Channel Number And Received Intensity

*#8999*364# - Watchdog ON/OFF

*#8999*427# - WATCHDOG Signal Route Setup

*2767*3855# - Full Reset (Caution every stored data will be deleted.)

*2767*2878# - Custom Reset

*2767*927# - Wap Reset

*2767*5282# - Reset Millet's Java and other related

*2767*63342# - Data Reset (deletes photos, ring tones)

*#9998*4357# - Help Menu

*#9998*5282# - Java menu (GRPS / CSD settings for JAVA server)

*#9999#0# - Net monitor

*#8888# or *#9998*8888# - Hardware based version

*#9998*377# or *#9998*0377# - The error log

*#9998*778# or *#9998*0778# or *#0778# - SIM Service table

*#9998*782# - Shows the date and time when the alarm clock will ring

*#9998*5646# - Change the operator logo that shows up at the start of your

*#9998*76# - Manufacturing number

*#9998*968# - View the available sounds for alarm

*#9998*585# - Permanent memory phone

*#3243948# - Digital Audio Interference Off

*#32436837# - This will bring the Digital Audio Interference On option

*#2683662# - Service Mode

*#7353# - Test Menu

*#74123465* - Camera Firmware Standard

ANDROID Samsung secret codes for Samsung Galaxy A21s


*#*#4636#*#* - Diagnostic and general settings mode Samsung Galaxy A21s. 4 menus will appear on the phone screen: (Phone information, Battery information, Battery history, Usage statistics)

*#*#225#*#* - Check your events in calendar

*#*#426#*#* - Check the connectivity between the FCM server and the mobile devices

*#*#759#*#* - Rlz Debug UI. Unique Device ID, PID, ACAP



*#*#36245#*#* - Access Email debug info

*#*#8255#*#* - For Google Talk service monitoring

*#*#64663#*#* - To launch hardware test (Version, Sim, WLAN, Battery, Radio, Speakers, Bluetooth)

*#2886# - Factory Auto Testing

*#*#273282*255*663282*#*#* OR *#*#273283*255*663282*#*#* - Create backup to all media files

*#*#7780#*#* - This code erases all your mobile data. It'll remove following things: (Downloaded applications, Google account, all data and settings)

*2767*3855# - This code is used for factory format.



*#*#7594#*#* - Customize the operation of the "End Call / Power" button on your phone.

*#*#34971539#*#* - This code is to retrieve information about the phone camera.

*#*#97#*#* - Language and Keyboard settings in Samsung Galaxy A21s

*#872564# - USB logging control

*#301279# - Display of the HSDPA/HSUPA Control Menu

*#9900# - System dump mode Samsung Galaxy A21s

*#*#46*#*# - Reset Sim in Samsung Galaxy A21s

*#*#197328640#*#* - Enter service mode to run various tests and change settings




WLAN, GPS and Bluetooth Test Codes:

*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use "Menu" button to start various tests)

*#*#232338#*#* - Get information of Wi-Fi Mac address

*#*#1472365#*#* - Show GPS test mode

*#*#1575#*#* - For a more advanced GPS test

*#*#232331#*#* - To troubleshoot Bluetooth

*#*#232337#*# - Shows Bluetooth device address in Samsung Galaxy A21s


GSM codes for Samsung Galaxy A21s


Change PIN code - **04* and enter the old PIN code, and twice a new PIN code.
Change PIN2 code - **042* and enter the old PIN2 code, and twice the new PIN2 code.
Unlock SIM (PIN) - **05* and enter the PUK code and new PIN code twice
Unlock SIM (PIN2) - **052* and enter the PUK2 code and new PIN2 code twice

Call Forwarding (you have to order the service from the operator)
##002#Deactivate call forwarding
##004#Cancel all conditional call forwarding
**004* phone number #Activate all conditional call forwarding


Unconditional call forwarding (Call Forward All)
###21 Switch off and deactivate
#21# Deactivate
**21*phone number# Enable and Activate
*21# Activate
*#21# Check the condition


Diversion in case of "no answer"
###61 Switch off and deactivate
#61# Deactivate
**61* phone number# Enable and Activate
*61# Activate
*#61# Check the condition


Diversion in case of "not available"
### 62 Switch off and deactivate
# 62 # Deactivate
** 62 *phone number# Enable and Activate
* 62 # Activate
* # 62 # Check the condition


Diversion in case of "busy"
###67 Switch off and deactivate
#67# Deactivate
**67*phone number# Enable and Activate
*67# Activate
*#67# Check the condition



Call Barring (you have to order the service from the operator)
Change the password for all bans (default - 0000)
- ** 03 * 330 * old password * new password * new password #

How to bar all outgoing calls
**33*(enter password)#@ - To Activate
#33*(enter password)#@ - To Cancel
*#33#@ - Check Status

Barring of all calls on your phone
*330*(enter password)# - To Activate
#330*(enter password)# - To Cancel
*#330# - Check Status

How to bar all outgoing international calls
*331*(enter password)# - To Activate
#331*(enter password)# - To Cancel
*#331# - Check Status

Block outgoing international calls when roaming
*332*(enter password)# - To Activate
#332*(enter password)# - To Cancel
*#332# - Check Status

Barring of all outgoing calls on your phone
*333*(enter password)# - To Activate
#333*(enter password)# - To Cancel
*#333# - Check Status

How to bar all incoming calls
*353*(enter password)# - To Activate
#353*(enter password)# - To Cancel
*#353# - Check Status

Barring all incoming calls during roaming on your phone
*351*(enter password)# - To Activate
#351*(enter password)# - To Cancel
*#351# - Check Status

Call waiting (you have to order the service from the operator)
*43# - To Activate
#43# - To Cancel
*#43# - Check Status

Transfer your phone number (Anti ANI)
#30#phone number - Block
*30#phone number - Allow
*#30# - Check Status

Show phone number of the caller you (ANI)
#77# - Block
*77# - Allow
*#77# - Check Status

Proceed with Caution: Use codes with care, as incorrect usage could affect device functionality.

If you're unsure about a code, do not use it. It's better to be safe than sorry.




Comments, Questions and Answers about the secret codes of Samsung Galaxy A21s


DaveMay 03, 2023
Incoming calls only ring for 5 seconds how can I extend this

Reply      
AdarshApril 22, 2022
I want to checl my history

Reply      
Dr AydidOctober 02, 2021
How get secret code radio waves of Samsung A21s

Reply      
Hemraj KumbhkarMay 11, 2021
Secret codes are not working

Reply      


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Samsung Galaxy A21s