How to Open Engineering Mode in Prestigio MultiPhone 3400 DUO (White)

Prestigio MultiPhone 3400 DUO (White)

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 Prestigio MultiPhone 3400 DUO (White).

Prestigio MultiPhone 3400 DUO (White) 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 Prestigio MultiPhone 3400 DUO (White) 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 Prestigio MultiPhone 3400 DUO (White)

How to root Prestigio MultiPhone 3400 DUO (White)

Hard reset for Prestigio MultiPhone 3400 DUO (White)

How to reboot Prestigio MultiPhone 3400 DUO (White)

How to unlock Prestigio MultiPhone 3400 DUO (White)

What to do if Prestigio MultiPhone 3400 DUO (White) won't turn on

What to do if Prestigio MultiPhone 3400 DUO (White) doesn't charge

What to do if Prestigio MultiPhone 3400 DUO (White) doesn't connect to PC via USB

How to take a screenshot on Prestigio MultiPhone 3400 DUO (White)

How to reset FRP on Prestigio MultiPhone 3400 DUO (White)

How to call recording on Prestigio MultiPhone 3400 DUO (White)

How to update Prestigio MultiPhone 3400 DUO (White)

How to connect Prestigio MultiPhone 3400 DUO (White) to TV

How to clear the cache on Prestigio MultiPhone 3400 DUO (White)

How to backup Prestigio MultiPhone 3400 DUO (White)

How to disable ads on Prestigio MultiPhone 3400 DUO (White)

How to clear storage on Prestigio MultiPhone 3400 DUO (White)

How to increase font on Prestigio MultiPhone 3400 DUO (White)

How to share internet on Prestigio MultiPhone 3400 DUO (White)

How to transfer data to Prestigio MultiPhone 3400 DUO (White)

How to unlock bootloader on Prestigio MultiPhone 3400 DUO (White)

How to recover photos on Prestigio MultiPhone 3400 DUO (White)

How to record the screen on Prestigio MultiPhone 3400 DUO (White)

How to find blacklist in Prestigio MultiPhone 3400 DUO (White)

How to set up fingerprint on Prestigio MultiPhone 3400 DUO (White)

How to block number on Prestigio MultiPhone 3400 DUO (White)

How to enable auto-rotate on Prestigio MultiPhone 3400 DUO (White)

How to set up or turn off an alarm on Prestigio MultiPhone 3400 DUO (White)

How to change ringtone on Prestigio MultiPhone 3400 DUO (White)

How to enable battery percentage on Prestigio MultiPhone 3400 DUO (White)

How to turn off notifications on Prestigio MultiPhone 3400 DUO (White)

How to turn off Google assistant on Prestigio MultiPhone 3400 DUO (White)

How to turn off the lock screen on Prestigio MultiPhone 3400 DUO (White)

How to delete app on Prestigio MultiPhone 3400 DUO (White)

How to recover contacts on Prestigio MultiPhone 3400 DUO (White)

Where is the recycle bin on Prestigio MultiPhone 3400 DUO (White)

How to install WhatsApp on Prestigio MultiPhone 3400 DUO (White)

How to set contact photo in Prestigio MultiPhone 3400 DUO (White)

How to scan QR code on Prestigio MultiPhone 3400 DUO (White)

How to connect Prestigio MultiPhone 3400 DUO (White) to computer

How to install SD card in Prestigio MultiPhone 3400 DUO (White)

How to update Play Store in Prestigio MultiPhone 3400 DUO (White)

How to install Google Camera in Prestigio MultiPhone 3400 DUO (White)

How to enable USB debugging on Prestigio MultiPhone 3400 DUO (White)

How to turn off Prestigio MultiPhone 3400 DUO (White)

How to charge Prestigio MultiPhone 3400 DUO (White)

How to use the camera on Prestigio MultiPhone 3400 DUO (White)

How to find lost Prestigio MultiPhone 3400 DUO (White)

How to set password on Prestigio MultiPhone 3400 DUO (White)

How to turn on 5g on Prestigio MultiPhone 3400 DUO (White)

How to turn on VPN on Prestigio MultiPhone 3400 DUO (White)

How to install apps on Prestigio MultiPhone 3400 DUO (White)

How to insert a SIM card in Prestigio MultiPhone 3400 DUO (White)

How to enable and configure NFC on Prestigio MultiPhone 3400 DUO (White)

How to set time on Prestigio MultiPhone 3400 DUO (White)

How to connect headphones to Prestigio MultiPhone 3400 DUO (White)

How to clear browser history on Prestigio MultiPhone 3400 DUO (White)

How to disassemble Prestigio MultiPhone 3400 DUO (White)

How to hide an app on Prestigio MultiPhone 3400 DUO (White)

How to download YouTube videos on Prestigio MultiPhone 3400 DUO (White)

How to unblock a contact on Prestigio MultiPhone 3400 DUO (White)

How to turn on the flashlight on Prestigio MultiPhone 3400 DUO (White)

How to split the screen on Prestigio MultiPhone 3400 DUO (White)

How to turn off the camera sound on Prestigio MultiPhone 3400 DUO (White)

How to trim video on Prestigio MultiPhone 3400 DUO (White)

How to bypass the Google account on Prestigio MultiPhone 3400 DUO (White)

How to fix black screen on Prestigio MultiPhone 3400 DUO (White)

How to change the language on Prestigio MultiPhone 3400 DUO (White)

How to open recovery mode in Prestigio MultiPhone 3400 DUO (White)

How to find and turn on a voice recorder on Prestigio MultiPhone 3400 DUO (White)

How to make video calls on Prestigio MultiPhone 3400 DUO (White)

Prestigio MultiPhone 3400 DUO (White) sim card not detected

How to transfer contacts to Prestigio MultiPhone 3400 DUO (White)

How to enable/disable «Do not disturb» mode on Prestigio MultiPhone 3400 DUO (White)

How to enable/disable answerphone on Prestigio MultiPhone 3400 DUO (White)

How to set up face recognition on Prestigio MultiPhone 3400 DUO (White)

How to set up voicemail on Prestigio MultiPhone 3400 DUO (White)

How to listen to voicemail on Prestigio MultiPhone 3400 DUO (White)

How to check the IMEI number in Prestigio MultiPhone 3400 DUO (White)

How to turn on fast charging on Prestigio MultiPhone 3400 DUO (White)

How to replace the battery on Prestigio MultiPhone 3400 DUO (White)

How to update the application on Prestigio MultiPhone 3400 DUO (White)

Why the Prestigio MultiPhone 3400 DUO (White) discharges quickly

How to set a password for apps in the Prestigio MultiPhone 3400 DUO (White)

How to format Prestigio MultiPhone 3400 DUO (White)

How to install TWRP on Prestigio MultiPhone 3400 DUO (White)

How to set up call forwarding on Prestigio MultiPhone 3400 DUO (White)

How to empty the recycle bin on Prestigio MultiPhone 3400 DUO (White)

Where to find the clipboard on Prestigio MultiPhone 3400 DUO (White)

How to Open Engineering Mode in Another Phones