📱 40+ Tecno Secret Codes That Actually Work in 2026

Hidden Features • Engineering Mode • Hardware Test • Battery Diagnostics

ℹ️ About This Guide

Tecno smartphones include many hidden secret codes that allow you to access engineering mode, test hardware, check battery information, diagnose problems and reveal advanced system details. These secret codes work without installing any third-party application and can help you troubleshoot your Tecno device quickly.

⚠️ Important Notice

Some secret codes may not work on every Tecno smartphone because Android versions, HiOS versions, security patches and hardware models are different.

*#06#

Purpose: Check IMEI Number

Displays your Tecno phone's original IMEI number. Useful for:

• Warranty Verification
• Network Registration
• Lost Phone Identification
• Device Authentication

*#07#

Purpose: SAR Information

Displays radiation safety information and SAR values of your Tecno smartphone.

*#*#4636#*#*

Purpose: Testing Menu

Opens a hidden testing menu that includes:

• Phone Information
• Battery Information
• Usage Statistics
• Wi-Fi Information

🔥 Monitor battery condition, charging status and battery health using these hidden Tecno secret codes.

*#0228#

Purpose: Battery Status

Shows:

• Battery Voltage
• Battery Health
• Battery Temperature
• Charging Status

*#*#4636#*#*

Purpose: Battery Information

Displays detailed battery statistics including charging condition, battery health and temperature.

*#0*#

Purpose: LCD & Hardware Test

Allows testing of:

• Display
• Touch Screen
• Camera
• Speaker
• Microphone
• Sensors

*#9646633#

Purpose: Tecno Engineering Mode

Provides access to advanced engineering settings and hardware diagnostic tools on supported Tecno devices.

💡 Pro Tip

Before buying a used Tecno smartphone, run these hardware test codes to check the battery, display, sensors, touch screen and camera for hidden problems.

*#*#34971539#*#*

Purpose: Camera Information

Displays:

• Camera Firmware Version
• Camera Hardware Details
• Lens Information
• Camera Module Information

⭐ Useful for checking camera hardware before purchasing a used Tecno phone.

*#*#2664#*#*

Purpose: Touch Screen Test

Checks:

• Touch Accuracy
• Touch Response
• Dead Touch Areas

🔥 Use these hidden Tecno codes to test important smartphone sensors.

*#*#0588#*#*

Purpose: Proximity Sensor Test

Checks whether the display automatically turns off during phone calls.

*#*#232331#*#*

Purpose: Bluetooth Test

Tests Bluetooth hardware and wireless communication.

*#*#232338#*#*

Purpose: Wi-Fi Information

Displays Wi-Fi MAC address and wireless connection details.

*#*#1472365#*#*

Purpose: GPS Test

Checks GPS signal quality and satellite connection.

*#*#1575#*#*

Purpose: Advanced GPS Test

Displays detailed GPS diagnostic information.

*3001#12345#*

Purpose: Field Test Mode

Shows advanced mobile signal and network information.

*#*#7262626#*#*

Purpose: Network Diagnostic

Useful for troubleshooting mobile network issues.

*#*#0289#*#*

Purpose: Audio Test

Checks:

• Speaker Output
• Audio Quality
• Sound Performance

⚠️ Important Note

Some Tecno secret codes may not work on every model because support depends on Android version, HiOS version, security updates and device hardware.

🔥 These advanced Tecno secret codes are commonly used by technicians to diagnose hardware, perform factory testing and access hidden engineering features.

*#9646633#

Purpose: Tecno Engineering Mode

Provides access to:

• Hardware Diagnostics
• Engineering Settings
• Factory Testing
• Device Information

*#0*#

Purpose: Hardware Test Mode

Allows testing of:

• Display
• Touch Screen
• Camera
• Speaker
• Microphone
• Sensors
• Buttons

*#*#0673#*#*

Purpose: Audio Test

Tests the microphone and speaker functionality.

*#*#0289#*#*

Purpose: Melody Test

Plays built-in sounds to verify speaker quality.

*#*#0842#*#*

Purpose: Vibration Test

Checks whether the vibration motor is working correctly.

*#*#2663#*#*

Purpose: Touch Firmware Information

Displays firmware details of the touch panel.

*#*#2664#*#*

Purpose: Touch Test

Checks screen responsiveness and touch accuracy.

*#12580*369#

Purpose: Software Information

Displays firmware version and software build details.

*#*#1111#*#*

Purpose: FTA Software Version

*#*#2222#*#*

Purpose: Hardware Version

*#1234#

Purpose: Firmware Version

*#9090#

Purpose: Diagnostic Configuration

Provides diagnostic configuration options on supported Tecno devices.

✅ Final Thoughts

These 40+ Tecno Secret Codes help you unlock hidden menus, test hardware, monitor battery health, diagnose sensors, verify cameras, troubleshoot network issues and access engineering tools. Remember that some codes may vary depending on your Tecno model, HiOS version and Android security updates.