How to Open Engineering Mode in Nokia XR21 Limited Edition

Nokia XR21 Limited Edition

The developers of most Android-based operating systems do not provide users with all the customisation options for their smartphones. Highly specialised and dangerous features are hidden in the engineering mode or developer mode. This is for the safety of the user, as many settings in the engineering mode can drastically change the way the device works.

For example, the most popular function in the Engineering mode is Volume Boost. This function allows you to increase the volume beyond the maximum level intended by the smartphone's designers. The guaranteed result is that the speakers will fail sooner.

However, the tech menu is still necessary for some users and all phone manufacturers offer free access to it, with the possible exception of Apple's shopping mode. However, you need to know special USSD codes that can be used to open engineering mode in the Nokia XR21 Limited Edition.

Nokia XR21 Limited Edition special codes and where they can be obtained

The codes that unlock certain functions are known only to the smartphone manufacturer. They are usually found in the technical documentation, a small booklet that comes in the phone's box and that 95% of people throw away after opening.

Another way to find out the USSD code for a particular model is to contact the manufacturer directly. A good example of this is Chinese brands, which discreetly answer this question on popular marketplaces.

The last sure-fire way is to simply search the internet. Every code for a particular device has been known for a long time, some of them even before the device was released. All you have to do now is type "code for Nokia XR21 Limited Edition Menu Engineering" in any search engine.

Quick guide

USSD codes are a series of numbers and symbols that you need to enter into your phone or call application. They are essentially entered in the same place you make a call on your smartphone.

  1. To do this, you need to open the dialling window. It will either open automatically when you log in to the application, or you can click on a small icon at the bottom of the screen.

  2. Enter the code you found earlier into the selection window. There is no need to press any buttons after entering the code, the engineering menu will open immediately.
  3. Look forward to an open engineering mode. Read the following information to avoid making any stupid mistakes.

Use all functions of the engineering menu at your own risk. We strongly advise you not to enable or disable anything you do not understand. Another popular feature is factory unlock. It is usually used to gain root privileges. However, enabling factory lock is written into the hardware of the device.

This is not about stealing data, it is about voiding the manufacturer's warranty because you have activated a feature that was not originally available to you. And if you catch a virus instead of getting root privileges, which is very common, the manufacturer has the right to deny you warranty support.

So once again: Never turn on or off features you do not understand!

Share this page with your friends:

See also:



How to flash Nokia XR21 Limited Edition

How to root Nokia XR21 Limited Edition

Hard reset for Nokia XR21 Limited Edition

How to reboot Nokia XR21 Limited Edition

How to unlock Nokia XR21 Limited Edition

What to do if Nokia XR21 Limited Edition won't turn on

What to do if Nokia XR21 Limited Edition doesn't charge

What to do if Nokia XR21 Limited Edition doesn't connect to PC via USB

How to take a screenshot on Nokia XR21 Limited Edition

How to reset FRP on Nokia XR21 Limited Edition

How to call recording on Nokia XR21 Limited Edition

How to update Nokia XR21 Limited Edition

How to connect Nokia XR21 Limited Edition to TV

How to clear the cache on Nokia XR21 Limited Edition

How to backup Nokia XR21 Limited Edition

How to disable ads on Nokia XR21 Limited Edition

How to clear storage on Nokia XR21 Limited Edition

How to increase font on Nokia XR21 Limited Edition

How to share internet on Nokia XR21 Limited Edition

How to transfer data to Nokia XR21 Limited Edition

How to unlock bootloader on Nokia XR21 Limited Edition

How to recover photos on Nokia XR21 Limited Edition

How to record the screen on Nokia XR21 Limited Edition

How to find blacklist in Nokia XR21 Limited Edition

How to set up fingerprint on Nokia XR21 Limited Edition

How to block number on Nokia XR21 Limited Edition

How to enable auto-rotate on Nokia XR21 Limited Edition

How to set up or turn off an alarm on Nokia XR21 Limited Edition

How to change ringtone on Nokia XR21 Limited Edition

How to enable battery percentage on Nokia XR21 Limited Edition

How to turn off notifications on Nokia XR21 Limited Edition

How to turn off Google assistant on Nokia XR21 Limited Edition

How to turn off the lock screen on Nokia XR21 Limited Edition

How to delete app on Nokia XR21 Limited Edition

How to recover contacts on Nokia XR21 Limited Edition

Where is the recycle bin on Nokia XR21 Limited Edition

How to install WhatsApp on Nokia XR21 Limited Edition

How to set contact photo in Nokia XR21 Limited Edition

How to scan QR code on Nokia XR21 Limited Edition

How to connect Nokia XR21 Limited Edition to computer

How to install SD card in Nokia XR21 Limited Edition

How to update Play Store in Nokia XR21 Limited Edition

How to install Google Camera in Nokia XR21 Limited Edition

How to enable USB debugging on Nokia XR21 Limited Edition

How to turn off Nokia XR21 Limited Edition

How to charge Nokia XR21 Limited Edition

How to use the camera on Nokia XR21 Limited Edition

How to find lost Nokia XR21 Limited Edition

How to set password on Nokia XR21 Limited Edition

How to turn on 5g on Nokia XR21 Limited Edition

How to turn on VPN on Nokia XR21 Limited Edition

How to install apps on Nokia XR21 Limited Edition

How to insert a SIM card in Nokia XR21 Limited Edition

How to enable and configure NFC on Nokia XR21 Limited Edition

How to set time on Nokia XR21 Limited Edition

How to connect headphones to Nokia XR21 Limited Edition

How to clear browser history on Nokia XR21 Limited Edition

How to disassemble Nokia XR21 Limited Edition

How to hide an app on Nokia XR21 Limited Edition

How to download YouTube videos on Nokia XR21 Limited Edition

How to unblock a contact on Nokia XR21 Limited Edition

How to turn on the flashlight on Nokia XR21 Limited Edition

How to split the screen on Nokia XR21 Limited Edition

How to turn off the camera sound on Nokia XR21 Limited Edition

How to trim video on Nokia XR21 Limited Edition

How to bypass the Google account on Nokia XR21 Limited Edition

How to fix black screen on Nokia XR21 Limited Edition

How to change the language on Nokia XR21 Limited Edition

How to open recovery mode in Nokia XR21 Limited Edition

How to find and turn on a voice recorder on Nokia XR21 Limited Edition

How to make video calls on Nokia XR21 Limited Edition

Nokia XR21 Limited Edition sim card not detected

How to transfer contacts to Nokia XR21 Limited Edition

How to enable/disable «Do not disturb» mode on Nokia XR21 Limited Edition

How to enable/disable answerphone on Nokia XR21 Limited Edition

How to set up face recognition on Nokia XR21 Limited Edition

How to set up voicemail on Nokia XR21 Limited Edition

How to listen to voicemail on Nokia XR21 Limited Edition

How to check the IMEI number in Nokia XR21 Limited Edition

How to turn on fast charging on Nokia XR21 Limited Edition

How to replace the battery on Nokia XR21 Limited Edition

How to update the application on Nokia XR21 Limited Edition

Why the Nokia XR21 Limited Edition discharges quickly

How to set a password for apps in the Nokia XR21 Limited Edition

How to format Nokia XR21 Limited Edition

How to install TWRP on Nokia XR21 Limited Edition

How to set up call forwarding on Nokia XR21 Limited Edition

How to empty the recycle bin on Nokia XR21 Limited Edition

Where to find the clipboard on Nokia XR21 Limited Edition

How to Open Engineering Mode in Another Phones