Android Secret Codes Complete List 2026
50+ Hidden Dialer Codes That Actually Work on Modern Android Phones. Tested on Android 15 & Samsung One UI 7.
⚠️ CRITICAL WARNING: Read Before Using
Some codes can erase all data or damage your device. We clearly mark dangerous codes with DANGER tags. Never use codes you don't understand.
🚫 Codes to NEVER Use (Unless You Know Exactly What You're Doing):
- *2767*3855# — Factory hard reset (ERASES EVERYTHING instantly)
- *#*#7780#*#* — Factory soft reset (deletes apps and data)
- Any code with "Factory Reset" in the description
Always backup your data before experimenting with secret codes.
📱 How to Use Android Secret Codes
✅ Simple Steps:
- Open your Phone or Dialer app
- Switch to the dial pad (numeric keypad)
- Type the code exactly as shown (including * and #)
- Most codes run automatically when you enter the last #
- Some codes require tapping the call button
Understanding Code Types:
- USSD Codes: Communicate with your carrier (balance, data usage)
- MMI Codes: Access phone's internal settings and hardware tests
- Manufacturer Codes: Specific to Samsung, Xiaomi, OnePlus, etc.
⚠️ Important Notes:
- Codes vary by manufacturer — Samsung codes won't work on Pixel
- Android 15+ blocks some older codes for security
- Carrier-locked phones may disable certain codes
- Use default Phone app — third-party dialers may not support all codes
🌍 Universal Android Codes (Work on Most Phones)
1. IMEI Number — The Most Important Code
Universal Tested 2026
Displays your phone's unique IMEI (International Mobile Equipment Identity) number. This 15-digit code identifies your device globally.
Why You Need It:
- Report stolen phone to police and carrier
- Block device from network if lost
- Warranty claims and repairs
- Verify phone authenticity (check against box)
✅ Works on: All Android phones, all iPhones, all feature phones. This is the most reliable secret code in existence.
2. Phone Information & Usage Statistics
Universal Tested 2026
Opens hidden Testing menu with detailed phone information:
Phone Information
Network type, signal strength, IMEI, phone number, data connection status
Battery Information
Health, voltage, temperature, technology (Li-ion), usage history
Usage Statistics
App usage time, last used, system uptime
Wi-Fi Information
MAC address, IP, connection status, signal strength
⚠️ 2026 Update: This code works on Google Pixel (Android 15) but NOT on Samsung One UI 7. Samsung has blocked it for security reasons.
ℹ️ Phone Information Codes
View Firmware Version
PDA, CSC, build time, and firmware info
UniversalSoftware Version Info
PDA software version and build details
UniversalFTA Software Version
Factory Test Application software version
UniversalFTA Hardware Version
Hardware version and manufacturing info
UniversalBuild Time & Version
Shows when your phone software was built
UniversalCamera Firmware
Camera hardware and firmware details
UniversalRAM Information
RAM version and memory details
UniversalTouchscreen Version
Touch panel firmware version
Universal🔧 Hardware Testing Codes
Display & Touch Testing
LCD Display Test
Test RGB colors, dead pixels, screen uniformity
SamsungGeneral Test Mode
RGB, receiver, vibration, touch, speakers, camera
SamsungTouch Screen Test
Test touch sensitivity and dead zones
UniversalLight Sensor Test
Test auto-brightness sensor functionality
SamsungProximity Sensor
Test screen-off-during-call sensor
SamsungAudio & Vibration Testing
Vibration & Backlight
Test vibration motor and screen backlight
UniversalAudio Test Mode
Test speakers, earpiece, microphone
SamsungAudio Loopback
Test audio path and recording
SamsungGPS & Connectivity Testing
GPS Test
GPS satellite connection and location test
Universal⚠️ Blocked on Android 15+
GPS Control Menu
Advanced GPS settings and tests
UniversalBluetooth Address
Display Bluetooth MAC address
UniversalWi-Fi MAC Address
Display Wi-Fi MAC address
UniversalWLAN Engineering
Wi-Fi service mode and diagnostics
Universal📡 Network & Connectivity Codes
Network Information & Settings
| Code | Function | Compatibility |
|---|---|---|
| *#2263# | RF Band Selection — Choose network type (2G/3G/4G/5G) | Samsung |
| *#0011# | GSM Network Status — Signal strength, cell tower info | Samsung |
| *#011# | Network Connection & Serving Cell Info | Samsung |
| *3001#12345#* | Field Test Mode — Cell tower IDs, signal in dBm | iPhone (Android limited) |
📞 Call Settings Codes
Caller ID & Call Management
Toggle Caller ID
Hide/show your number when calling
Universal⚠️ Works on Pixel, limited on Samsung
Hide Caller ID (One Call)
Hide number for single call (US)
UniversalShow Caller ID (One Call)
Unblock caller ID for single call
UniversalToggle Call Waiting
Enable/disable call waiting notification
Universal⚠️ Carrier dependent
Check Call Waiting Status
See if call waiting is enabled
UniversalCheck Call Forwarding
See if calls forward when busy
UniversalCheck All Call Forwarding
See all call forwarding settings
UniversalEnable Call Forwarding
Forward all calls to another number
Universal📱 Samsung-Specific Secret Codes
⚠️ Samsung Only
These codes work exclusively on Samsung Galaxy devices. Using them on other brands may cause errors or unexpected behavior.
Samsung Diagnostic & Test Codes
| Code | Function | Status |
|---|---|---|
| *#0*# | General Test Mode — RGB, touch, speakers, camera, sensors | ✅ Working 2026 |
| *#011# | Network Connection & Serving Cell Info | ✅ Working 2026 |
| *#0808# | USB Settings — Change USB connection mode | ✅ Working 2026 |
| *#9090# | Diagnostic Configuration / RAM Dump | ⚠️ Advanced users only |
| *#9900# | SysDump Mode — Network, battery, Wi-Fi optimization | ✅ Working 2026 |
| *#272*IMEI#* | Change CSC (Sales Code) — Region/ carrier customization | ⚠️ May void warranty |
| *#7353# | Quick Test Menu — Fast hardware diagnostics | ✅ Working 2026 |
Samsung Service & Configuration Codes
Service Mode Main Menu
Advanced service and testing options
SamsungCamera Firmware Menu
Camera hardware and software details
SamsungTSP / TSK Firmware
Touch screen panel firmware update
SamsungOTA Update Menu
Force check for system updates
SamsungTest History
View previous diagnostic test results
Samsung❌ Not working on One UI 7
USB Logging Control
Enable/disable USB debugging logs
Samsung🚨 Samsung Factory Reset Codes (DANGER)
⚠️ WARNING: These Erase All Data
Factory Hard Reset — Instantly wipes everything and reinstalls firmware. No confirmation. No undo.
Factory Soft Reset — Deletes apps, settings, and data. Keeps firmware.
Only use if:
- You're selling the phone and want to wipe it completely
- Phone is severely corrupted and won't boot normally
- You've backed up everything and understand data will be permanently lost
📡 Carrier-Specific Codes (US)
Data Usage & Balance Check
| Carrier | Code | Function |
|---|---|---|
| Verizon | #3282 | Data usage and billing cycle info |
| AT&T | *3282# | Data usage and plan details |
| T-Mobile | #932# | Data usage and remaining allowance |
| Sprint | *4 | Account and usage information |
Note: These only work with the specific carrier and may require active service. Prepaid and MVNO carriers may use different codes.
❌ Codes That No Longer Work (2026 Update)
Android 15 and Samsung One UI 7 have blocked many legacy codes for security. Don't waste time on these:
| Code | Was Supposed To | Status |
|---|---|---|
| #07# | Show SAR values and regulatory info | ❌ Blocked on Android 15+ |
| *#*#1472365#*#* | GPS test | ❌ Blocked on Android 15+ |
| *#*#4636#*#* | Phone info menu | ⚠️ Works on Pixel, NOT Samsung |
| *31# | Toggle caller ID | ⚠️ Limited carrier support |
❓ Frequently Asked Questions
Why don't some codes work on my phone?
Three main reasons: 1) Manufacturer blocked it (Samsung blocks many universal codes), 2) Android version (Android 15+ removed several legacy codes), 3) Carrier restriction (some carriers disable codes for security).
Can these codes damage my phone?
Most codes are safe "read-only" diagnostics. However, factory reset codes and CSC change codes can alter or erase data. We clearly mark dangerous codes with red warning boxes.
Do iPhones have secret codes too?
Yes, but far fewer. iPhone codes are mostly limited to *#06# (IMEI) and field test mode *3001#12345#*. Apple restricts access for security.
Are secret codes the same as USSD codes?
Related but different. USSD codes communicate with your carrier (balance checks). MMI codes access phone hardware/settings. Secret codes are a subset of MMI codes that manufacturers don't advertise.
Can I create my own secret codes?
No. These codes are hardcoded into the phone's firmware by manufacturers. However, apps like Tasker can create custom shortcuts that simulate similar functionality.
💡 Pro Tips for Using Secret Codes
✅ Best Practices:
- Screenshot results — IMEI, MAC addresses, etc. for your records
- Use default Phone app — Third-party dialers often don't support codes
- Test after repairs — Use hardware test codes to verify fixes
- Check before buying used — Verify IMEI isn't blacklisted
- Document working codes — Save ones that work on your specific model
⚠️ Avoid These Mistakes:
- Don't share your IMEI publicly (it's like a serial number)
- Don't run unknown codes from random websites
- Don't factory reset without backing up
- Don't change CSC unless you understand region locking
🎯 Final Thoughts
Android secret codes are powerful tools for diagnostics, troubleshooting, and accessing hidden information. While modern Android versions have blocked some legacy codes for security, many still work—especially on Google Pixel devices.
The golden rule: If you don't understand what a code does, don't use it. Stick to the safe codes marked in this guide, and you'll unlock useful features without risking your data.
Most reliable codes in 2026:
- *#06# — IMEI (universal, always works)
- *#0*# — Samsung test mode
- *#*#4636#*#* — Phone info (Pixel only)
CONCLUSION
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