Samsung Galaxy A21s secret codes

OS: Android v10 (Q)

CPU: Octa core (2 GHz, Quad core, Cortex A55 2 GHz, Quad core, Cortex A55)

RAM: 4 GB

Display: 6.5 inches (16.51 cm)

Battery: 5000 mAh

Samsung Galaxy A21s smartphone runs on Android v10 (Q) operating system. The phone is powered by Octa core (2 GHz, Quad core, Cortex A55 2 GHz, Quad core, Cortex A55) processor. It has 4 GB. Internal storage options which can be extended with the help of Up to 512 GB. The smartphone has a Li-ion providing. The smartphone is fueled with a 5000 mAh. The main camera of the smartphone consists of a 48 MP f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera(26 mm focal length, 2" sensor size, 0.8µm pixel size)8 MP f/2.2, Wide Angle, Ultra-Wide Angle Camera(4.0" sensor size, 1.12µm pixel size)2 MP f/2.4, Macro Camera2 MP f/2.4, Depth Camera. The sensors include Light sensor, Proximity sensor, Accelerometer, Gyroscope. Connectivity features in the smartphone include Bluetooth, A-GPS, Glonass, Wi-Fi, 3.5 mm Jack and more. The Samsung Galaxy A21s are available in various colors such as Black, Blue, White. It measures 163.7 x 75.3 x 8.9 mm and weighs 192 grams Below.

Secret codes for Samsung Galaxy A21s

*#06#	- IMEI (International Mobile Equipment Identity) number
##3646633## or ##54298##	- Engineering Mode (for smartphones based on MTK processor)
##4636##	- Hidden Android Testing menu (Phone, Battery, WiFi and other)
##225##	- Calendar Storage
##426##	- This code show Google Play
*#0011#	- ServiceMode
*#0808#	- Change USB Settings
*#9900#	- Dump mode
*#9090#	- Diagnostic configuration
#0#	- General Test Mode
*#2663#	- TSP / TSK firmware update
#12580369#	- Software and hardware info
*#0283#	- Audio Loopback Control
#7465625638#	- Insert Network Lock Key Code
##759##	- Rlz Debug UI. Unique Device ID, PID, ACAP
##36245##	- Email debug information
##8255##	- For Google Talk service monitoring
##64663##	- Access Hardware Test (Sensors, Bluetooth, Battery, Speakers)
##7780##	- Factory Data Reset (all phone data will be erased).
27673855#	- Instant reset
##232338##	- Displays Wi-Fi Mac-address
##34971539## or *#34971539#	- Show camera information.
##1234##	- PDA and Phone firmware info
##7594##	- Changing the power button behavior-Enables direct poweroff once the code enabled
##1472365##	- For a quick GPS test
##273283255663282##*	- For a quick backup to all your media files
##1575##	- Another GPS test
##197328640##	- Enabling test mode for service activity
##0283##	- Packet Loopback test
*#0228#	- battery calibration

##232339## OR ##526##	- Wireless Lan Tests
##0##*	- Mobile phone LCD test
##3264##	- Ram version
##1111##	- FTA Software version
##2664##	- Touch-Screen test
##0588##	- Proximity sensor test
##8351##	- Enables voice dialing logging mode
##232331##	- Troubleshoot your Bluetooth
##232337#*#	- Check Bluetooth device address
##7262626##	- Field test
##0289## OR ##0673##	- Audio test
##0842##	- Backlight/vibration test
##2663##	- The displays touch-screen version of Android device
##44336##	- Displays Build time and change list number
##49862650468##*	- PDA, Phone, Hardware, RF Call Date firmware info
##8350##	- Disables voice dialing logging mode
##2222##	- FTA Hardware verion

GSM codes for Samsung Galaxy A21s

Change code
*03old codenew codenew code#
- Change code for call barring
*04old PIN codenew PIN new PIN#
- Change SIM Card PIN code
*042old PIN2 codenew PIN2new PIN2#
- Change SIM Card PIN2 code
*05PUK codenew PUKnew PUK#
- Change SIM Card PUK code
*052PUK2 codenew PUK2new PUK2#
- Change SIM Card PUK2 code

Call waiting
*43#	- To turn Call Waiting On for all calls
#43#	- To turn Call Waiting OFF for all calls
*#43#	- Check status of call waiting

Call Forwarding
##002#	- Disable All Call Forwarding
*004PhoneNumber#	- Set all configured call diversions to PhoneNumber
##004#	- Unregister all configured call diversions

USSD Codes For Call Forward All
21PhoneNumber#	- Register and activate divert all calls to PhoneNumber
##21#	- Unregister divert all calls
*21#	- To turn Divert On for all calls
#21#	- To turn Divert OFF for all calls
*#21#	- Check status of divert all calls

Set up call diversion in case of "no answer"
*61PhoneNumber#	- Register and activate divert on no answer to PhoneNumber
##61#	- Unregister divert on no answer
*61#	- To turn Divert On no answer calls
#61#	- To turn Divert OFF for no answer calls
*#61#	- Check status of divert on no answer

Diversion in case of "not available"
*62PhoneNumber#	- Register and activate divert on not reachable
##62#	- Unregister divert on not reachable
*62#	- Activate divert on not reachable
#62#	- Deactivate divert on not reachable
*#62#	- Check status of divert on not reachable

Diversion in case of "busy"
*67PhoneNumber#	- Register and activate divert on busy
##67#	- Unregister divert on busy
*67#	- Activate divert on busy
#67#	- Deactivate divert on busy
*#67#	- Check status of divert on busy all call types
#6711#	- Check status of divert on busy voice calls
#6713#	- Check status of divert on busy fax calls
#6725#	- Check status of divert on busy data calls

Activate barr all outgoing calls
*33code#	- Activate barr all outgoing calls (for code see "Safety" above)
#33*code#	- Deactivate barr all outgoing calls
*#33#	- Check status of barr all outgoing calls

Set barring of all calls
*330code#	- Activate barr all calls
#330*code#	- Deactivate Barr all calls
#330code#	- Check status of barr all calls

Set barring of all outgoing international calls
*331code#	- Activate all outgoing international calls barring
#331*code#	- Deactivate all outgoing international calls barring
#331code#	- Check status of barr all outgoing international calls

Blocking all outgoing international calls except home country
*332code#	- To turn Barring On for all outgoing international calls except home country
#332*code#	- To turn Barring OFF for all outgoing international calls except home country
#332code#	- Check status of barr all outgoing international calls except home country

Set barring of all outgoing calls
*333code#	- Activate all outgoing calls barring
#333*code#	- Deactivate all outgoing calls barring
*#333#	- Check status of barr all outgoing calls

Activate barr all incoming calls
*35code#	- Activate barr all incoming calls
#35*code#	- Deactivate Barr all incoming calls
*#35#	- Check status of barr all incoming calls

Set barring of all incoming calls when roaming
*351code#	- Activate barr all incoming calls when roaming
#351*code#	- Deactivate Barr all incoming calls when roaming
*#351#	- Check status of barr all incoming calls when roaming

Set barring of all incoming calls
*353code#	- To turn Block On for all incoming calls
#353*code#	- To turn Block OFF for all incoming calls
*#353#	- Check status of Blocking all incoming calls

Thomas Nilan
Smartphone Expert

Thomas Nilan is a mobile phone expert with in-depth knowledge of the Android and iOS operating systems, who understands the settings of various hidden features that allow you to expand the capabilities of your smartphone, as well as get information about what is going on inside the phone for future repairs. He is an authority in his field, which has allowed him to become a ghostwriter for several technology publications, and he enjoys writing small mobile applications for testing smartphones.

User questions and comments about secret codes Samsung Galaxy A21s

	Kagiso monthe	August 04, 2022
	Can't i fix a using its imei?
Reply

	Juth krulio	February 22, 2024
	How can I use secret code to unlock Samsung A21s
Reply

	Bjwydo@	March 21, 2024
	The Samsung smartphone with Android v10 offers excellent battery life, fast charging, and a range of features like fingerprint sensor and good camera quality. Great value for money.
Reply

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