What is Engineer Mode on OnePlus? How to Enable It on Any OnePlus Smartphone?

First Method: Enable Engineer Mode via ADB Shell

Enabling Engineer Mode on a OnePlus smartphone via ADB Shell requires a few steps, but it is a more advanced method that can be used if the previous method does not work. Here is a guide to enable Engineer Mode on a OnePlus smartphone via ADB Shell:

1. Connect your OnePlus smartphone to a computer via a USB cable.
2. Open a command prompt or terminal on your computer.
3. Type “adb devices” to ensure that your device is recognized and connected to the computer.
4. Next, type “adb shell” to enter the device’s shell.
5. Now, you will receive a pop-up to grant the USB Debugging on your phone.
6. Once granted permission, you must download the OnePlus Tool.exe on your computer.
7. Once you launch the tool, type in 1 and hit Enter to bring up the code for your device.
8. Then, type in 5 and hit Enter again to open the Input Code window. Alternatively, you can use the dialer app on your phone and enter *#*#5646#*#*to bring up the same window.
9. Input the code you obtained earlier and click OK to receive the “Decrypted successfully” message.
10. Finally, open the dialer and input either *#808* or *#36446337#  to access the Engineer Mode and perform the desired test. Note that this method doesn’t require you to provide your device’s IMEI number.

Second Method: Enable Engineer Mode Via Magisk Modules

Enabling Engineer Mode on your OnePlus device via Magisk Modules is a popular and reliable method. Magisk is a popular root management tool that allows users to install various modules to customize their Android devices. With Magisk, users can access advanced system settings, modify system files, and enable features unavailable on stock Android.

To enable Engineer Mode via Magisk Modules, follow these steps:

1. First, you must ensure that your OnePlus device is rooted and has Magisk installed. You can download the Magisk Manager app from the official website and follow the instructions to install it on your device.
2. Open the Magisk Manager app and go to the Modules section. Here, you will see a list of available Magisk Modules.
3. Select the appropriate module and search for “Engineer Mode MTK” or “MTK Engineer Mode” in the search bar.
4. Tap the Download button to download the module, and then tap Install to install it on your device.
5. Once the module is installed, reboot your device.
6. After rebooting, open the dialer app and dial *#808*. This will open the Engineer Mode on your OnePlus device.
7. You can access various advanced settings and features in the Engineer Mode menu, such as Function Switch, Debugging Tools, and Fingerprint Calibration.

It is important to note that enabling Engineer Mode on your OnePlus device via Magisk Modules requires root access, which can potentially void your device’s warranty. Additionally, modifying system files and settings may cause your device to malfunction or become unstable if done incorrectly. Therefore, it is recommended that you proceed cautiously and only attempt this method if you have sufficient knowledge and experience in rooting and customizing Android devices.

Third Method: Enable Engineer Mode Via Root

Enabling Engineer Mode on your OnePlus device via Root is another popular method. Rooting your device grants you superuser access, allowing you to modify system files and settings that are not accessible to regular users. You can enable advanced features and functions with root access, including Engineer Mode.

To enable Engineer Mode via Root, follow these steps:

1. First, you need to ensure that your OnePlus device is rooted. There are various rooting tools available online, such as KingRoot and SuperSU, that you can use to root your device. Be sure to research and use a reliable and trusted tool.
2. Once your device is rooted, download a root file manager app, such as ES File Explorer or Root Explorer.
3. Open the root file manager app and navigate to the System folder
4. You have to grant SuperUser permission to access the system files.
5. Now go to the location given below.

   /mnt/vendor/persist/engineermode/

6. Now inside this folder, look for file name engineermode_config.
7. Once you find it, open the file in text format.
8. Scroll down and look for the content

   encrypt_app=true
   encrypt_adb=true
   rc4_key=**********************
   imei=*******************
   last_download_time=***********
   encrypt_log=true

9. Change that above line with the below-given value

   encrypt_app=false
   encrypt_adb=false
   rc4_key=********************************
   imei=*******************
   last_download_time=*******************
   encrypt_log=true

10. Save the changes to the file and exit the text editor.
11. Reboot your device.
12. After rebooting, open the dialer app and dial *#808#. This will open the Engineer Mode on your OnePlus device.
13. You can access various advanced settings and features in the Engineer Mode menu, such as Function Switch, Debugging Tools, and Fingerprint Calibration.

It is important to note that enabling Engineer Mode on your OnePlus device via Root requires root access, which can potentially void your device’s warranty. Additionally, modifying system files and settings may cause your device to malfunction or become unstable if done incorrectly. Therefore, it is recommended that you proceed with caution and only attempt this method if you have sufficient knowledge and experience in rooting and customizing Android devices.

In conclusion, Engineer Mode is a powerful tool that allows OnePlus device users to access advanced settings and features that are not available to regular users. In this guide, we have outlined three different methods to enable Engineer Mode on your OnePlus device: via ADB, Magisk modules, and with Root.