📱 40+ OnePlus Secret Codes That Actually Work in 2026

Hidden Features • Engineering Mode • Battery Test • Hardware Diagnostics

ℹ️ About This Guide

OnePlus smartphones include many hidden secret codes that unlock powerful diagnostic tools. These codes help you access engineering mode, check battery health, test hardware components, view phone information and troubleshoot problems without installing any third-party application.

⚠️ Important Notice

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

*#06#

Purpose: Check IMEI Number

Displays your original IMEI number. Useful for:

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

*#899#

Purpose: Engineering Mode

Allows access to:

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

*#07#

Purpose: SAR Information

Displays radiation information for your OnePlus smartphone.

🔥 These battery codes help you monitor charging status and battery health.

*#*#4636#*#*

Purpose: Battery Information

Displays:

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

*#0228#

Purpose: Battery Status

Shows advanced battery statistics on supported OnePlus devices.

*#808#

Purpose: Factory Hardware Test

Tests:

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

*#36446337#

Purpose: Engineering Menu

Opens advanced engineering settings on supported OnePlus smartphones.

💡 Pro Tip

Before purchasing a used OnePlus phone, run these hardware testing codes to check the display, battery, camera and sensors for hidden issues.

*#*#34971539#*#*

Purpose: Camera Information

Displays:

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

⭐ Useful for checking camera hardware and firmware.

*#*#2664#*#*

Purpose: Touch Screen Test

Tests:

• Touch Accuracy
• Touch Response
• Dead Touch Areas

🔥 Test important OnePlus sensors without installing any application.

*#*#0588#*#*

Purpose: Proximity Sensor Test

Checks whether the screen automatically turns off during calls.

*#*#232331#*#*

Purpose: Bluetooth Test

Tests Bluetooth communication and hardware.

*#*#232338#*#*

Purpose: Wi-Fi Information

Displays Wi-Fi MAC address and wireless information.

*#*#1472365#*#*

Purpose: GPS Test

Checks GPS signal quality and satellite connection.

*#*#1575#*#*

Purpose: Advanced GPS Test

Shows detailed GPS diagnostic information.

*3001#12345#*

Purpose: Field Test Mode

Displays advanced mobile network signal information.

*#*#7262626#*#*

Purpose: Network Diagnostic

Useful for diagnosing network communication issues.

*#*#0289#*#*

Purpose: Audio Test

Checks:

• Speaker Quality
• Audio Output
• Sound Performance

⚠️ Note

Some secret codes are disabled in newer OxygenOS versions for security reasons. If a code does not work, your OnePlus model or software version may not support it.

🔥 These advanced OnePlus secret codes are mostly used by technicians to diagnose hardware and access hidden engineering tools.

*#899#

Purpose: Engineering Mode

Provides access to:

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

*#808#

Purpose: Factory Hardware Test

Allows testing of:

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

*#*#0673#*#*

Purpose: Audio Test

Checks microphone and speaker functionality.

*#*#0289#*#*

Purpose: Melody Test

Plays built-in tones to verify speaker quality.

*#*#0842#*#*

Purpose: Vibration Test

Tests the vibration motor.

*#0*#

Purpose: LCD Test

Useful for checking:

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

*#*#2663#*#*

Purpose: Touch Firmware Version

Displays touch screen firmware information.

*#12580*369#

Purpose: Software Information

Shows firmware and software build details.

*#*#1111#*#*

Purpose: FTA Software Version

*#*#2222#*#*

Purpose: Hardware Version

*#1234#

Purpose: Firmware Version

Displays the current firmware version on supported OnePlus devices.

✅ Final Thoughts

These OnePlus secret codes can help you access hidden menus, check battery health, test hardware, diagnose sensors, view camera information and open engineering mode. Keep in mind that some codes may not work on all OnePlus phones because support varies by model and OxygenOS version.