What Are Samsung Secret Codes & How to Use

Your Samsung Galaxy phone includes information and diagnostic tools that are not always visible in the normal Settings menus. Some of them can be opened by entering a code in the Phone app. These are commonly called Samsung secret codes, dialer codes, service codes, or USSD/MMI codes, although these terms are not always technically identical.

Quick answer: A code such as *#06# is a low-risk way to display the device IMEI and serial information. Codes such as *#0*# may open Samsung hardware diagnostics on supported Galaxy models. Other service, network, CSC, or reset codes can change settings or erase data and should not be entered just to see what happens.

Does Samsung Have Secret Codes?

Yes. Samsung Galaxy phones support several dialer codes that can display information or open diagnostic and service functions. The exact set is not the same on every device. Some codes are standard phone-identification codes, while others are Samsung-specific service shortcuts that may be enabled only on certain models or firmware builds.

For example, Samsung officially documents *#06# as a way to display a Galaxy phone’s IMEI and serial number. A commonly used Samsung diagnostic code is *#0*#, which can open a hardware test menu on supported devices. However, carrier or software restrictions may prevent that menu from opening on some Galaxy phones.

Secret codes can be useful for checking device information, testing hardware, or opening advanced service menus, but they should not be treated as a general troubleshooting shortcut. For normal diagnostics, Samsung also provides the Samsung Members app, where supported phones can run tests for the display, camera, buttons, sensors, audio, battery-related functions, and more.

How to Use Samsung Secret Code Free?

You normally enter a Samsung dialer code directly in the Phone app. No third-party application is required for codes supported by your device.

Follow these steps:

Step 1: Open the Phone app on your Samsung Galaxy device.

Step 2: Open the keypad and enter the complete code. For example, dial *#06# to display the IMEI information.

Step 3: Many supported codes trigger automatically after the final symbol is entered, so you may not need to press the Call button. If nothing happens, the code may be disabled or unsupported on that device or firmware.

Before you enter a code:

• View-only codes: Usually display information and are the safest category.
• Diagnostic/service-menu codes: May expose advanced settings. View information only unless you understand the setting.
• Reset/network/CSC codes: Can change configuration or erase data. Do not use them as a test.

Samsung Secret Code List 2026

The list below keeps the most common Samsung secret-code categories, but not every code will work on every Galaxy phone in 2026. To make the list safer to use, each group is marked by risk and compatibility rather than assuming that all codes are current and universal.

Type 1. Samsung Secret Code for Device Information

Risk: Low for view-only functions.

Code	Function	Compatibility / Notes
*#06#	Display IMEI and serial information.	Samsung officially documents this code for Galaxy devices.
*#0*#	Open a Samsung hardware diagnostic/test menu.	Works on many Galaxy devices, but may be disabled by model, region, carrier firmware, or software version.
*#*#4636#*#*	Open an Android testing/information screen on some devices.	Not Samsung-specific and not available on every Galaxy model.
*#12580*369#	Show software/hardware information on some Samsung builds.	Legacy/service availability varies.
*#0228#	Open battery/status service information on some Samsung phones.	Advanced service screen; avoid changing unfamiliar values.

What If *#0*# Does Not Work on Samsung?

If *#0*# does not open the hardware test menu, do not assume the phone is faulty. The diagnostic menu may be restricted by the carrier, firmware, region, or current software configuration.

For a supported official alternative, open Samsung Members and go to the diagnostics area. Depending on the app version and region, the path may appear as Support > View tests, Support > Phone diagnostics, or a similar Diagnostics option. You can then run individual tests or test all supported functions.

Type 2. Samsung Secret Code for Firmware Check

Risk: Medium. These are service-oriented codes, and support varies widely.

• *#32489# – Reported on older Samsung service-code lists for ciphering/service information. Legacy; may not work on current Galaxy phones.
• *#0808# – May open USB service/settings options on supported Samsung firmware. Advanced: changing USB configuration can affect device connectivity.
• *#197328640# – Legacy Samsung service-mode code. Availability varies.
• *#9090# – May open diagnostic/service configuration on some Samsung builds. Do not change unknown settings.
• *#526# – Reported WLAN/service code on older Samsung devices. Legacy compatibility.
• *#2663# – May display touch-screen/touch-key firmware information on supported models.
• *#7412365# – Reported camera firmware/service menu on some Samsung devices.
• *2767*4387264636# – Legacy PCODE/sellout-related service code. Not expected to work universally on modern Galaxy devices.
• #8736364# – Legacy OTA/service-menu code reported on some Samsung firmware.
• *#2683662# – Reported Samsung advanced service-mode code. Availability varies by firmware.
• *#34971539# – May display camera firmware information on supported Samsung models.

Type 3. Samsung Secret Code for Restarting

Risk: Medium. Treat these as legacy codes rather than universal reboot commands.

• #*3849# – Reported restart command on some older Samsung devices.
• #*2562# – Reported reboot code on some legacy Samsung firmware.
• #*3876# – Reported soft-reset code on older Samsung devices.
• #*3851# – Reported restart code on certain legacy Samsung models.

These restart codes are not reliable across modern Galaxy devices. For a current Samsung phone, use the normal power-menu or hardware-button restart method instead.

Type 4. Samsung Secret Code for Network Check

Risk: Medium to High. Your GSC data shows strong interest in Samsung network codes, but many older web lists mix network information with network-lock programming. They are not the same thing.

• *#2263# – May open RF band/network service selection on supported Samsung firmware. Advanced; changing bands can affect connectivity.
• *7465625*638*# – Legacy network-lock programming code reported for older Samsung devices. Do not treat as a universal carrier-unlock method.
• *7465625*782*# – Legacy NSP/network-lock service code. Compatibility varies.
• #7465625*77*# / *7465625*77*# – Legacy service commands related to network/service-provider lock settings.
• #7465625*27*# – Legacy content-provider/network-lock service command.
• *#272*IMEI# – Legacy CSC-related service code reported on some Samsung firmware. Changing CSC can alter regional/carrier configuration and may affect data or services.

Type 5. Samsung Secret Code for Debugging

Risk: Medium. These menus are primarily for diagnostics or service work.

• *#745# – Reported RIL/debug dump menu on some Samsung firmware.
• *#746# – Reported general debug/dump menu on some Samsung firmware.
• *#03# – Reported NAND/flash serial-information code on some devices.
• *#272886# – Legacy service code associated with auto-answer settings on some Samsung devices.
• *#7594# – Legacy service code associated with End Call/power-button behavior.
• *#9900# – Opens SysDump/diagnostic options on supported Samsung devices. It should not be described as a guaranteed way to improve network speed, battery life, or Wi-Fi performance.

Type 6. Samsung Secret Code for Factory Reset

• *#*#7780#*#* – A legacy Android reset code reported on some older devices. Not supported universally on modern Samsung phones.
• *2767*3855# – A legacy Samsung full-reset/service code reported on older firmware. Potentially destructive; do not test casually.
• *#*#273283*255*663282*#*#* – Legacy Android media-backup/copy code reported in older dialer-code lists. Do not rely on it as a current backup method.
• *#22558463# – Reported service code for call-time information/reset on some older Samsung devices.

Type 7. Samsung Secret Code for SIM Unlock

Important: Older Samsung code lists contain SIM/network-lock commands, but they should not be presented as a universal way to unlock a carrier-restricted Galaxy phone in 2026.

• #0111*0000000# – Legacy code reported in older Samsung SIM/network-unlock lists. Do not assume this will unlock a modern carrier-locked phone.
• #7465625*28746# – Legacy network-lock/service code reported on older Samsung firmware.
• **04*[old PIN]*[new PIN]*[new PIN]# – A SIM-PIN change command supported in some GSM environments. Availability depends on the SIM/network implementation.

If a Samsung Galaxy phone is carrier locked, use the carrier’s official unlock procedure and eligibility requirements. If the issue is the screen PIN, password, or pattern, that is a different type of lock and a network/SIM code will not remove it.

Samsung Secret Codes: Quick Risk Guide

Risk	Typical Use	What to Do
Low	IMEI or view-only information	Generally safe to view. Do not share IMEI publicly.
Medium	Diagnostics, service mode, USB, RF, SysDump	View only unless you understand the setting and have device-specific instructions.
High	Factory reset, CSC changes, network-lock programming	Back up first. Prefer official Samsung/carrier procedures.

FAQs About Samsung Secret Codes

Q1. Do Samsung secret codes work on all Galaxy phones?

No. Code availability varies by Galaxy model, region, carrier firmware, Android/One UI version, and the Phone app. A code can work on one Samsung device and do nothing on another.

Q2. Why is *#0*# not working on my Samsung?

The Samsung hardware-test menu may be restricted on your device or firmware. Instead of trying random service codes, use Samsung Members Diagnostics if it is available on your phone.

Q3. What is the Samsung test code?

*#0*# is one of the best-known Samsung diagnostic/test-menu codes on supported Galaxy phones. It can expose tests such as display colors, touch, sensors, speaker, vibration, and other hardware checks, but the exact menu and availability vary.

Q4. Are Samsung secret codes safe?

Some are. View-only codes such as *#06# are low risk. Service, network, CSC, and factory-reset codes can change settings or erase data. Use the risk labels in this guide before entering a code.

Q5. Can a Samsung secret code unlock the screen?

No universal Samsung secret code can remove a modern lock-screen PIN, password, or pattern. Network/SIM unlock codes are also different from screen-lock removal.

Q6. Can Samsung secret codes erase my phone?

Some legacy reset/service codes can trigger destructive actions on supported firmware. Do not test reset codes casually. Use Samsung’s normal reset menu or official recovery instructions when you intentionally need to erase the device.

Q7. Are Samsung secret codes the same as USSD codes?

Not exactly. “Samsung secret codes” is a broad search term that often includes MMI/service codes and USSD-style dialing sequences. Some commands are processed by the phone locally, while true USSD requests are typically handled through the mobile network.

Bonus Tip. How to Unlock Samsung Without Secret Code

Some users searching for Samsung secret codes are actually looking for a code that can bypass a forgotten screen PIN, password, or pattern. There is no universal Samsung dialer code that safely removes a modern screen lock.

If the phone is yours and you need to regain access, first consider Samsung/Google account recovery and other official recovery options available for your device. If you choose a third-party desktop tool, understand the data impact before starting.

DroidKit Screen Unlocker is one option designed to remove Android screen locks on supported devices. For Samsung workflows that require wiping device data, the data on the device can be erased during lock removal. Do not present screen unlocking as a no-data-loss process unless the exact device/workflow explicitly supports that outcome.

Steps to Unlock Samsung with DroidKit:

Step 1: Download and install DroidKit on your computer. Connect your Samsung device to the computer with a USB cable. Launch DroidKit and choose Screen Unlocker.

Step 2: Click Start, then follow the device-detection instructions shown by DroidKit.

Step 3: Allow DroidKit to prepare the configuration required for the connected device, then click Remove Now when prompted.

Step 4: Select Samsung and review the unlocking option shown for your model. If DroidKit displays Wipe device data, understand that the phone’s local data will be erased before you continue.

Step 5: Follow the on-screen instructions for Recovery Mode and any required cache/data steps for the connected Samsung model.

Step 6: Keep the device connected while DroidKit completes the lock-removal process. When finished, set up the phone again as required.

Conclusion

Samsung secret codes are most useful when they are treated as device-specific shortcuts, not as universal hacks. Start with low-risk information or diagnostic functions, such as *#06# for IMEI information or *#0*# for the hardware test menu on supported Galaxy phones. If a diagnostic code is unavailable, Samsung Members provides a current official testing path on supported devices.

Be more cautious with service, network, CSC, and reset codes because support varies and some can change settings or erase data. And if your real goal is to remove a forgotten Samsung screen lock, a secret dialer code is not a universal solution. Use an official recovery method where possible, or review the compatibility and data-loss requirements before using a tool such as DroidKit.