What is engineering mode/Factory mode:
Engineering mode or Engmode is a special advanced menu in every android device which is hidden from other settings. Engineering Mode consists of Many features and settings that are not accessible by normal settings or Apps. You can also perform various performance tests and tweaks using Engineering Mode.
Features available in engineering mode:
1.Change LTE band and other network setting
2.Boost device audio than normal.
3.Customize hardware and camera settings
4.Increase WiFi range and signal
5.Increase Battery performance
6.Customize Bluetooth
7.Change MAC address of your device
8.change IMEI code of android device
9.CPU management
10.Recovery Mode
11.Unlock some root features without rooting
11.Change network setting including LTE band
12. One plus 8 and 8 pro you can use this mode to enable photochrome filter to acess xray mode in camera which was disabled by OnePlus.Instead of above there are many others too available
OnePlus is famous among tinkerers for having a rich collection of diagnostic tools beyond the battery health checker. As a matter of fact, earlier builds of Oxygenos OS on devices like the OnePlus 3, 3T, and OnePlus 5 shipped with an extremely low-level diagnostic testing application called “EngineerMode,” which could be exploited to grant root access without unlocking the bootloader. Later on, OnePlus removed the exploitable debugging code, renamed the app to “FactoryMode”
OnePlus hides the “FactoryMode” app behind a unique unlock code for every smartphone they produce.
The unlock code is derived from the primary IMEI of a OnePlus device. After deciphering how it’s generated, xda senior member AndroPlus wrote an unlock code generator that can unlock access to the Factory Mode app.
Warning: Be careful using OnePlus Factory Mode/Engineering Mode. There are many low-level tools and tests here that users aren’t meant to access, so you should only do this if you are aware of the risks and know what you’re doing.
Note: Keep in mind that the web-based unlocker doesn’t store your device’s IMEI. That being said, the IMEI of your device is a pretty sensitive piece of information, so don’t blindly share it with anyone.
You need IMEI number to be pasted in the mentinoed website and its generally safe because this process is developed by recognised developers at XDA you can search in the google with tags to verify
How to acess this feature:
Hey guys engineering mode also renamed by one Plus as factory mode has been disabled by OnePlus to access from dialer by dialing *#808#.
But most of ways to enable this mode includes root method but by following method you can enable it without root.
Steps:
1)Go to dialer and type *#06# and you will see your device IMEI number copy it by long pressing on it.
2)Now go to following link
CLICK BELOW LINK TO ACESS UNLOCK SITE
There you have to first select one of the two options permeantly unlock or unlock for 10 min. Some OnePlus devices not able to unlock permeantly like my one plus 6, OnePlus 7, 8 so you need to do trial and check.
3) so first select permeant factory mode unlock and you need to press convert tab
4) now you will get code copy it go to dialer again now dial *#*#5646#*#* you will see barcode scanning screen just swipe back and you need to paste your copied code here and hit ok.
5) If you see decrypted succefully then you done but if not go back to. Dialer copy IMEI nad go to the link select unlock for 10min and click convert and copy the code
6) go to dialer again press *#*#5646#*#*
And swipe back and enter the new code and click ok now you will definitely see succefully decrypted for 10min.
7) now in the diler type *#808# to access the factory mode.
That's it you have unlocked OnePlus hidden factory mode.
Here is small video tutorial to access this hidden mode without root
How unlock eingenireng mode Realme c11 device
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