Secret codes are used to access technical information and hidden features on Android devices. While some generic codes work on all Android devices, others work with specific brands only. For example, if you own a OnePlus device, the Samsung-specific secret codes might not work for you. We’ve compiled a list of OnePlus secret codes, hidden settings, and USSD codes. With these dialer codes, you can access a wide range of hidden settings, diagnostic tools, and technical information about your OnePlus device.

MMI and USSD codes contain numeric values and are preceded and followed by special characters like asterisk (*) and hash (#). Since very few people are aware of these codes, they are often referred to as secret codes.

USSD (Unstructured Supplementary Service Data) codes work universally on all mobile devices. They communicate with mobile network operators’ computers in real time and are used to enable and disable network-based services, get SIM and network-related information, and avail self-service options via menu-based information services. Some USSD codes are network-specific and they work with specific operators only.

On the other hand, MMI (Man Machine Interface) codes, are device-specific and don’t need a network connection to function. Some of them work on all smartphones (*#06, for example). However, many support a certain OS and device OEM. In the same way, some MMI codes are generic to all Android devices but some work only with specific smartphone brands. You should check out our comprehensive list of Android secret codes as well.

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OnePlus Secret Codes

OnePlus is a smartphone manufacturer known for value-for-money devices. The company also has several secret codes and hidden settings that can be accessed by enterprising users using secret codes. Below, we’ll look at OnePlus secret codes and hidden settings like Engineering mode, battery test mode, service mode, and sensor test interface. The codes will also help you unlock new features, diagnose the hardware, and get key information about your OnePlus device.

1 .OnePlus Engineering Mode Code

You can use *#36446337# on your phone’s dialer to access the Engineering mode on your OnePlus device. The mode is also known as Factory mode and can help you troubleshoot your device. If *#36446337# doesn’t work for you, you can try *#808# or *#888# (tested on Oneplus Nord CE2 Lite 5G) to enter the Engineering mode and *#899# to go to the after-sales support screen.

Under the Factory mode on your OnePlus device, you’ll find hidden settings test network, sensor, audio, Bluetooth, Wi-Fi, and NFC. Moreover, you’ll get options to enter the Fastboot mode directly, wipe device data using the ‘all clear’ option, change charging settings, and so on.

The OnePlus secret codes to access the Engineering mode might not work on some devices. If that is the case with you, you can try the following trick to unlock the Factory mode.

  1. Dial *#06# on your OnePlus device. Long press the IMEI number to copy it.
  2. Go to ‘one.andro.plus’ and select Unlock for 10 minutes or Unlock permanently.
  3. Then enter your IMEI number and click on the Convert option.
  4. Copy the code that you get.
  5. Now dial *#*#5646#*#* on your phone. When you see the barcode scan screen, go back and paste the code that you copied in Step 4 and tap OK.
  6. You’ll get a message saying “Decrypted successfully“. If you don’t, try the same procedure by selecting the Unlock for 10 minutes option.
  7.  When the Factory mode is decrypted, go to the dialer screen and type *#808# or *#36446337# to access the unlocked Engineering or Factory mode on your OnePlus phone.

That’s it!

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2. Service Mode Code for OnePlus

OnePlus devices come with a hidden setting named Service mode. You can invoke this mode using the *#*#197328640#*#* secret code. The Sevice Mode allows users to run a variety of tests and change some settings as well.

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3. Secret Code to Wipe Data

If you want to wipe out the data stored in the internal memory on your OnePlus phone without going to device settings, you can use a secret code for that. Simply, open your phone’s dialer and type *#*#2947322243#*#*.

4. Check the Software Version of OnePlus Devices

It’s easy to check the software version of a OnePlus device by navigating to Settings > About phone. However, there is another way to display the software version by dialing *#1234# or *#*#1234#*#*.

5. Code to Perform a Factory Reset

You can use *#*#7780#*#* to reset your phone to factory settings. In that process, it will remove device settings, Google account settings, installed apps and their data, and media files stored in the internal memory. The system apps and the files stored on the SD card will remain intact. You can also use *#*#947322243#*#* to wipe device data instantly. You must back up your data before using this code.

6. Reset OnePlus Device

While *#*#7780#*#* warns you and asks for confirmation before it resets your device, using *2767*3855# will format your OnePlus phone as soon as you dial this code. All files, device configurations, and internal storage will be wiped. Be very careful while using it because once you type it, you won’t be able to cancel the process.

7. Check Phone and Battery Information

If you want to get technical information about your phone, dial *#*#4636#*#*. Moreover, you’ll also get information about your phone’s battery and usage statistics. The screen will display the following items. You can tap a specific item to get detailed information.

  • Phone information
  • Usage statistics
  • Battery information
  • Battery history

8. Check and Update Camera Software Version

Using *#*#34971539#*#* on your OnePlus device will display the following options.

  • Get the camera firmware version
  • Get firmware update count
  • Update camera firmware in the SD card
  • Update the camera firmware

You can use these options to check the current version of the camera firmware and update it. Some users have had bad experiences when they tried the Update the camera firmware in image option. Their camera app stopped working so it’s recommended that you don’t try that.

9. Check the PDA, Phone, and CSC Version

If you have used a Samsung phone or tablet, you must be familiar with CSC (Consumer Software Customization). CSC contains region-based customizations. Similarly, the PDA and Phone versions tell you about the firmware installed on your OnePlus device. You can dial *#*#44336#*#* on your phone to display the CSC and the PDA version.

10. Check the IMEI and MEID of OnePlus Devices

*#06# is the most commonly known dialer code that works on all mobile devices. It’s used to check IMEI (International Mobile Equipment Identity) and MEID (Mobile Equipment Identifier) numbers of a mobile device. OnePlus devices support one more secret code for the purpose. You can dial *#66# to display the IMEI and MEID numbers of your OnePlus phone in an encrypted format.

Miscellaneous Secret Codes for OnePlus Devices

Besides the MMI codes mentioned above, there are a bunch of more OnePlus secret codes and USSD codes that you can try.

  • *#*#0*#*#* ➡ Display test
  • *#*#0283#*#* ➡ Packet loopback
  • *#*#0588#*#* ➡ Proximity sensor test
  • *#*#0673#*#* ➡ Melody test, You can also use *#*#0289#*#*.
  • *#*#0842#*#* ➡ Vibration, backlight, and other device tests.
  • *#*#1111#*#* ➡ FTA SW Version
  • *#*#1472365#*#* ➡ GPS test
  • *#*#1575#*#* ➡ Advanced GPS test
  • *#*#1597#*#* ➡ Manual camera selection
  • *#*#197328640#*#* ➡ Enter into Service mode to run various tests and change settings.
  • *#*#2222#*#* ➡ FTA HW Version
  • *#*#225#*#* ➡ Calendar info
  • *#*#232331#*#* ➡ Bluetooth test
  • *#*#232337#*# ➡ Displays Bluetooth device address
  • *#*#232338#*#* ➡  Displays Wi-Fi MAC address
  • *#*#232339#*#* ➡ WLAN test
  • *#*#2663#*#* ➡ Touch screen version
  • *#*#2664#*#* ➡ Touch screen test
  • *#*#273283*255*663282*#*#* ➡ Creates immediate backup of all media files
  • *#*#3264#*#* ➡ Displays RAM version
  • *#*#426#*#* ➡ Debug info about Google Play Services
  • *#*#46*#*# ➡ Reset SIM
  • *#*#4986*2650468#*#* ➡ Displays PDA, Phone, H/W, RFCallDate versions
  • *#*#7594#*#* ➡ Change the Power button behavior. Instead of showing the Power menu with a long press, you can make the Power button directly turn off your Android device.
  • *#*#97#*#* ➡ Change language and keyboard settings
  • *#12580*369# ➡ Software and hardware information
  • *#7465625# ➡ Display phone lock status
  • *#888# ➡ PCB version of the motherboard of a OnePlus device
  • *#872564# ➡ USB logging control mode
  • *#9090# ➡ Diagnostic configuration mode
  • *#9900# ➡ Enter the System dump mode
  • *3001#12345#* + Call button ➡ Access Field Mode to get info about local networks and cell towers

OnePlus secret codes and hidden settings are a great way to get the most out of your device. We hope this list has helped you discover new ways to customize your device and get the most out of it. What other secrets have you found on your OnePlus phone? Let us know in the comments below.

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