📱 40+ OPPO Secret Codes You Must Know in 2026

Hidden Features • Engineering Mode • Battery Test • Hardware Diagnostics

ℹ️ About This Guide

Did you know your OPPO smartphone has dozens of hidden secret codes? These codes allow you to check battery health, test hardware, view phone information, access engineering mode and diagnose many device problems without installing any third-party application.

⚠️ Important Notice

Some secret codes may not work on every OPPO device because ColorOS versions and hardware models are different.

*#06#

Purpose: Check IMEI Number

Shows your phone's original IMEI numbers. Useful for:

• Warranty Verification
• Phone Registration
• Lost Device Tracking
• Network Verification

*#899#

Purpose: OPPO Engineering Mode

One of the most useful OPPO hidden codes. It provides access to:

• Hardware Testing
• Factory Diagnostics
• Device Information
• Sensor Testing

*#07#

Purpose: SAR Information

Displays radiation safety information of your OPPO smartphone.

🔥 These hidden battery codes help you check charging status and battery health.

*#*#4636#*#*

Purpose: Battery Information

Shows:

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

*#0228#

Purpose: Battery Status Menu

Displays advanced charging and battery statistics on supported OPPO devices.

*#808#

Purpose: Hardware Test Mode

Test:

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

*#36446337#

Purpose: Engineering Menu

Opens advanced engineering settings available on many OPPO smartphones.

💡 Pro Tip

If you're buying a used OPPO phone, run these hardware testing codes first to detect hidden issues before making your purchase.

*#*#34971539#*#*

Purpose: Camera Information

Displays:

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

⭐ Helpful for checking camera hardware.

*#*#2664#*#*

Purpose: Touch Screen Test

Checks:

• Touch Accuracy
• Dead Touch Areas
• Screen Response Speed

🔥 Quickly test your OPPO phone sensors using these hidden codes.

*#*#0588#*#*

Purpose: Proximity Sensor Test

Tests whether the screen turns off automatically during phone calls.

*#*#232331#*#*

Purpose: Bluetooth Test

Checks Bluetooth hardware and communication.

*#*#232338#*#*

Purpose: Wi-Fi Information

Displays Wi-Fi MAC address and wireless information.

*#*#1472365#*#*

Purpose: GPS Test

Checks GPS signal strength and satellite detection.

*#*#1575#*#*

Purpose: Advanced GPS Test

Shows detailed GPS diagnostic information.

*3001#12345#*

Purpose: Field Test Mode

Provides advanced mobile network signal information.

*#*#7262626#*#*

Purpose: Network Diagnostic

Used for testing mobile network communication.

*#*#0289#*#*

Purpose: Audio Test

Tests:

• Speaker
• Sound Quality
• Audio Output

⚠️ Note

Some secret codes may not work on newer ColorOS versions because OPPO disables certain engineering functions for security reasons.

🔥 These advanced OPPO secret codes are commonly used by technicians for diagnostics and troubleshooting.

*#899#

Purpose: Engineering Mode

Access advanced testing functions including:

• Hardware Diagnostics
• Device Information
• Sensor Calibration
• Factory Testing

*#808#

Purpose: Factory Hardware Test

Useful for checking:

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

*#*#0673#*#*

Purpose: Audio Test

Checks microphone and speaker functionality.

*#*#0289#*#*

Purpose: Melody Test

Plays built-in sounds to verify speaker quality.

*#*#0842#*#*

Purpose: Vibration Test

Tests vibration motor performance.

*#0*#

Purpose: LCD Test

Useful for detecting:

• Dead Pixels
• Display Colors
• Touch Accuracy
• Screen Quality

*#*#2663#*#*

Purpose: Touch Firmware Version

Displays touch screen firmware details.

*#12580*369#

Purpose: Software Information

Displays software build information and firmware details.

*#*#1111#*#*

Purpose: Software Version

*#*#2222#*#*

Purpose: Hardware Version

✅ Final Thoughts

These OPPO secret codes can help you check hardware, battery health, network information, sensors, cameras, engineering mode and many hidden features. Some codes may differ depending on your OPPO model and ColorOS version, but most of the codes listed above work on a wide range of OPPO smartphones.

💙 Thanks For Visiting

We hope this OPPO Secret Codes guide helped you discover useful hidden features, engineering menus and powerful testing tools.

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