Samsung Secret Codes: The Ultimate List for Diagnostics, Tests & Hacks [2026 Updated]

Although they might sound like something related to hacking, samsung secret codes are actually safe tools designed to troubleshoot and resolve technical issues on Samsung Galaxy devices. These special samsung codes give developers and advanced users access to diagnostic features for testing, debugging, and improving device performance—without modifying or compromising your smartphone’s software.

• Part 1: What is the Secret Code (Samsung Galaxy Secret Code) and How To Use Them?
• Part 2: Why Do We Need a Samsung Galaxy Secret Code?
• Part 3: Samsung Galaxy Secret Codes List (Updated 2025)
• Part 4: FAQs about Samsung Galaxy Secret Codes
• Bonus Tip: How to Unlock Samsung Galaxy Phone Screen Without Passcode?

Part 1: What is the Secret Code (Samsung Galaxy Secret Code) and How To Use Them?

There are numerous samsung secret codes for Galaxy devices—unique combinations of numbers and symbols entered through the phone dialer to reveal hidden settings or system information. One of the most common samsung codes is *#06#, which instantly shows your device’s IMEI, MEID, and serial number.

These codes are unique and specific to the manufacturer. It means check codes for Samsung will not work in any other brand like Sony, HTC, Nokia, etc. So, it is important to use Samsung mobile check codes only on Samsung devices, not on other brands as it may be harmful and cause damage to other devices. Don’t experiment with such codes unnecessarily on other brands because it can alter the configuration of the device. Make sure you know what these codes are intended for, before using any Samsung check code.

Here are the steps on how to use Samsung secret codes:

• Step 1. Open the dialer app on your Samsung device.
• Step 2. Dial the secret code you want to use. Secret codes are a combination of numbers and symbols that can perform specific functions on your device.
• Step 3. Once you dial the code, press the call button.
• Step 4. The code will activate, and the function will be performed on your device.
• Step 5. Some secret codes require additional input or confirmation, so be sure to follow any on-screen prompts.
• Step 6. Be careful when using secret codes, as some of them can cause damage to your phone if used incorrectly.

Note: Secret codes may vary depending on the Samsung device model and firmware version.

Part 2: Why Do We Need a Samsung Galaxy Secret Code?

If you’re an aspiring mobile developer or simply curious about exploring hidden phone functions, samsung secret codes can be incredibly useful. Although many of these samsung codes are now publicly available, they remain widely unknown to most users. By learning how these codes work, you can unlock advanced diagnostic tools, test device performance, and gain deeper insights into your Samsung Galaxy smartphone’s system operations.

Using samsung secret codes is a smarter way to access advanced phone functions without digging through settings or applying unnecessary tricks. For aspiring Android developers, mastering these samsung codes can boost technical skills and career growth. They also let you quickly diagnose and fix issues anytime, without visiting a service center.

Part 3: List of Samsung Galaxy Secret Codes (Updated 2025)

Here's a list of secret codes for the Samsung Galaxy mobile phone which allows you to perform several functions on your phone, like restarting it in different modes and sim lock/unlock, getting information about your phone, turning on some hidden functions and system controls, performing a factory reset and checking your network. These Samsung Galaxy Secret codes are compatible with all the models of the Samsung Galaxy series. You can find the detailed list of Samsung Galaxy Secret Code along with their functions below.

1. Samsung Galaxy Secret Code for Test Functions

Below are Samsung Galaxy secret codes for you to test functions:

• Enter Light Sensor mode with this code - *#0589#
• Proximity Sensor - *#0588#
• Access all Wi-Fi Mac Addresses - *#*#232338#*#*
• For WLAN network - *#*#526#*#*
• For testing GPS - *#*#1472365#*#*
• Another test code for GPS testing - *#*#1575#*#*
• Access Samsung USB Settings - *#0808#

• Diagnostic Configuration - *#9090#
• To troubleshoot Bluetooth - *#*#232331#*#*
• Enter Bluetooth Test Mode - #*3888#
• Audio Testing - *#0673#
• Test your device screen - #*#0*#*#*
• Check Backlight and Vibration and perform other general tests - *#*#0842#*#*
• General test mode: RGB (Red Blue Green), Receiver, Vibration, Touch sensitivity, Speakers, Camera sensors, S-Pen, Audio loopback etc. - *#0*#
• Audible - *#0673#
• Universal Test Menu - *#8999*8378#
• Mobile Time Testing in Real-Time - *#0782#
• Vibration Motor Test - *#0842#
• Check SAR (Specific Absorption Rate) Level - *#07#

2. Samsung Galaxy Secret Codes for Mobile Restarting

The following Samsung Galaxy Secret codes are used to restart your Samsung Galaxy device without doing it manually:

• #*3849#
• #*2562#
• #*3876#
• #*3851#

3. Samsung Galaxy Secret Code for SIM Lock/Unlock

• SIM Unlock - #0111*0000000#
• Check the network lock keycode - #7465625*28746#
• Change SIM Card PIN - **04*[old Pin]*[new Pin]*[new Pin

4. Samsung Galaxy Secret Code for Getting Phone Information

• Get Your Device Info - *#*#4636#*#*
• View H/W, PDA and RFCallDate info on your phone - *#*#4986*2650468#*#*
• View Firmware Software version - *#*#1111#*#*
• Check AP, CP, CSC Version, & Model Number - *#1234#
• View Firmware hardware version - *#*#2222#*#*
• Display ROM Sales code, change list number and build time of your phone build - *#*#44336#*#*
• Reset user data and change sales codes - *#272*IMEI#
• View all user stats from the very beginning and important phone info - *#*#4636#*#*
• View status Information for GSM network - *#0011#
• Check hardware and software info - *#12580*369#
• Check All Hardware and software versions of the device - #*#8377466#
• Request your own phone number - *135#[dial]
• Check battery status ADC, RSSI reading, etc. - *#0228#
• Displays network connection and cell-related information - *#011
Enable call waiting - *43# [dial] Turn off call waiting - #43#[dial] Show the status of call waiting - *#43#[dial]

5. Samsung Galaxy Secret Code for System Control

• To Control USB Logging - *#872564#
• To enter Control Panel of USB I2C Mode - *#7284#
• Check the Control Audio Loop back - *#0283#
• To control GCF Configuration - *#4238378#
• To Control and manage GPS menu - *#1575#

6. Samsung Galaxy Secret Code for Check Firmware / Service Mode

• Get Ciphering info and enter service mode - *#32489#
• Code for USB Service - #0808#
• Default Service Mode - *#197328640#
• Check Diagnostic Configuration - *#9090#
• Code to enter WLAN Enginerring WiFi Service Mode - *#526#
• Check TSP and TSK firmware update - *#2663#
• Enter Camera Firmware menu - *#7412365#
• Code to sellout SMS / PCODE view *2767*4387264636#
• Code to get to OTA Update Menu - #8736364#
• Access Samsung Service Mode - *#2683662#
• Check Camera Status and Firmware Version - *#34971539#

7. Samsung Galaxy Secret Code for Factory Reset

• Reset or Format your Samsung Smartphone with confirmation message - *#*#7780#*#*
• Factory Reset without confirmation message - *2767*3855#
• Backup and copy media files - *#*#273283*255*663282*#*#*
• Reset total call time - *#22558463#

8. Samsung Galaxy Secret Code for Check Network

• Customize MCC/MNC Network Lock - *7465625*638*#
• Customize Network Lock NSP - *7465625*782*#
• Insert any Network lock keycode (semi-partiality) - *7465625*782*#
• Insert Network Operator - #7465625*77*#
• Network Lock SP - *7465625*77*#
• Network insertion of Galaxy content provider - #7465625*27*#
• Change the CSC of Samsung Devices - *#272*IMEI#
• Choose the type of your network mode RF Band - *#2263#

9. Samsung Galaxy Secret Code for Debugging

• Dump Menu to dump RIL - *#745#
• General debug dump menu - *#746#
• Code to view NAND Flash S/N - *#03#
• Code to Auto Answer Selection - *#272886#
• Code to remap shutdown to End Call TSK - *#7594#
• Provides the option to improve phone network, battery life, and Wi-Fi speed and access Samsung SysDump mode - *#9900#

FAQs about Samsung Galaxy Secret Codes

1. What does *#0*# do on Samsung?

*#0*# is a Samsung secret code that opens a diagnostic mode for testing various hardware parts of the phone. It allows users to check the functionality of the screen, sensors, camera, speakers, vibration, and other components. This code is only intended for advanced users and should not be used unless you know what you're doing.

2. What is *# 9900 Samsung code function?

*#9900 Samsung code function is a diagnostic mode that allows users to check the system dump mode on their Samsung devices. It can be used to troubleshoot and identify issues related to network connectivity, battery, and performance. It is recommended for advanced users and should be used with caution as it can potentially cause harm to the device if not used properly.

3. What is code *# 62 on Samsung?

*#62# is a USSD code used on Samsung devices to check the call forwarding status of the phone. It displays the number to which the calls are currently being forwarded or if call forwarding is disabled.

4. What is * * 4636 * * for Samsung?

* * 4636 * * is a code for Samsung that opens the Phone Testing menu. This menu allows users to access various information about their device, such as battery status, signal strength, and network connectivity. It can also be used to run diagnostic tests and troubleshoot any issues with the phone's hardware or software. However, it is important to note that some of the options in this menu can potentially cause damage to the device if used improperly, so it should only be accessed by experienced users or under the guidance of a professional.

5. What is code *# 21 on Samsung?

*#21 is a service code that allows users to activate call forwarding on their Samsung device. By dialing *#21 followed by the phone number, users can forward their calls to another phone number. It's important to note that the availability and functionality of this code may vary depending on the device model and carrier.

Bonus Tip: How to Unlock Samsung Screen when You Forgot Samsung Password?

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• Step 1. Install Dr.Fone Toolkit on your computer and open Dr.Fone's Screen Unlock. Then connect the locked Samsung phone to your computer with a data cable.

• Step 2. Click the “Unlock Android Screen” module and select the device brand, Samsung. Then you can choose the Unlock Way – “100% Remove screen lock” or “Remove without data loss”. Dr.Fone can remove the Android lock screen without losing data for part of the Samsung devices in this list. For other devices, which can remove the lock screen by erasing data.

• Step 3. Follow the guide you will see to enter into Download Mode or Recovery Mode. Then you can start to remove. Just wait for the unlocking process to complete.

Conclusion

Samsung secret codes provide a safe, non-destructive way to fix many common Galaxy device issues. They allow users to access locked modes, remove app locks, and manage warranty-related functions easily. If you’re unsure which samsung codes apply to your device, tools like Dr.Fone - Screen Unlock (Android) can also help resolve lock screen and access problems across Samsung and other Android phones.

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