How to make a white screen on Xiaomi: display diagnostics and resetting settings

Many Xiaomi smartphone users are wondering how to make a white screen on a device, and there are several completely different reasons for this, most often when checking the matrix for broken pixels, burnt out areas or uneven backlights immediately after buying a gadget.

Depending on your end goal, the methods will be radically different, since there is no regular switch “turn on white light” in the usual menu. The engineering menu provides access to hidden hardware testing functions that allow you to display a clean white image without unnecessary icons. There are also software methods that use special applications or online services for color calibration.

It is important to understand that if your screen has turned white spontaneously and does not respond to actions, this may indicate a serious hardware failure or damage to the display plume. In this article, we will discuss all legal and safe ways to obtain a white image for testing, and also discuss methods for resuscitating the system if the device is getting stuck on a white screen.

Using engineering code to check the matrix

The most reliable and professional way to display a clean white image on the screen of a Redmi or Poco smartphone is to log into the engineering menu through a special device. USSD-This method does not require the installation of third-party applications and works at the system driver level of the device. To begin the check, you need to open the standard Phone application, through which you usually make calls.

Type the combination ##64663##, and the device will automatically redirect you to the CIT menu. Here's a list of all the components of the phone that you can test. Find a item on the list called White or White and click on it. The screen will instantly turn pure white, allowing you to carefully examine the surface in good lighting.

During the test, carefully examine the corners of the screen, as this is where build defects or uneven backlights are most common.If you notice pinkish or yellowish hues at the edges, this may be a feature. IPS-It's a little bit like a matrice, but it's a bit like a marriage, and it's usually enough to get out of white screen, if you're still active, you just have to press the back button or the physical control button.

⚠️ Note: Do not try to enter other codes found on the Internet unless you are sure of their purpose, as some of them may reset network settings or cause a reboot.

Software Methods Through Browser and Applications

If you're not able to enter engineering codes for some reason or are blocked by a carrier, you can use software methods that produce a similar visual result. The easiest option is to open a Chrome browser or Mi Browser and go to a site that specializes in display testing. There are many resources that offer the Dead Pixel Test feature, where you can choose a solid white background.

An alternative is to install specialized apps from the Google Play store, such as Screen Test or Dead Pixel Test and Fix, which are designed specifically for diagnostics and allow you to switch the colors of the screen with a single touch, including pure white, red, green and blue, which is especially handy if you need to quickly switch between colors to find defective pixels.

The advantage of the software methods is their versatility: they work the same on Xiaomi Mi 11, Redmi Note 10 and older models without having to memorize complex codes. However, it is worth considering that when using a browser or application, interface elements such as the address bar or navigation buttons will still be visible on the screen, which can interfere with accurate diagnosis.

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For the most accurate check, turn on the “Auto-brightness” settings and twist the brightness slider to the maximum to better see the matrix illuminations.

When using online services, make sure that the image is stretched to the full screen, hiding the system panels. For this, many sites offer to click the Full Screen button or deploy the browser window, which will allow you to assess the real state of the OLED or IPS matrix without distortion from the interface elements of the MIUI or HyperOS operating system.

Comparison of methods of diagnostics of display

The right method depends on how deep your diagnosis is and whether you have access to the Internet or the app store. Below is a table that will help you navigate and choose the best option for your situation with a Xiaomi device.

As you can see from the comparison, engineering code is the preferred option for Android smartphone owners, as it does not require any software installation, but if the code does not work, Google Play apps will be a great alternative.

Using a white screenshot is a popular method that is often recommended in forums, so you can download a white image, open it up to the full screen, and remove the interface elements from the gallery, which is less effective than a CIT test, but can help in an emergency when other methods are not available.

What to do if the screen turns white on its own

A situation where Xiaomi’s screen suddenly turns white and stops responding to touch is often called a “White Screen of Death,” a condition that can be caused by an operating system malfunction, a conflict of display drivers, or a critical SystemUI process error.

To do this, press and hold the power button for 10-15 seconds. Some Redmi and Poco models require simultaneous pressing of the power button and the volume reduction key. If the device vibrates and the Mi logo appears, then the system is trying to recover and the problem was most likely software.

If a simple reboot doesn’t work and the phone hangs back on the white screen, system files may be damaged, which may require you to log in to Recovery Mode. To enter this mode, you usually need to turn off the phone (if possible) and press the power button along with the volume button before the menu appears.

⚠️ Warning: If after a forced reboot, the phone is cyclically restarted or hangs on a white screen, do not continue to try to turn on indefinitely so as not to drain the battery to zero.

Resetting and system restoration

When a software glitch fails to fix a simple reboot, the only way out is often a complete data reset, known as Wipe Data.This procedure will return the phone to factory status by removing all user data, apps and settings, but can save the device from "bricking."Be sure to remember the password from your Mi Account before starting the procedure.

Log in to the Recovery menu as described in the previous section and select a language (usually English or Chinese). Then go to Wipe Data and confirm the action by selecting Wipe All Data. The process will take a few minutes, after which the phone will restart. This action effectively eliminates the software conflicts that cause the white screen.

In some cases, a white screen may appear due to a recent system update or an incompatible theme installation. If you have installed a third-party theme through the Themes app, try to enter Safe Mode or delete the theme through the file manager if the screen is at least occasionally responsive. Deleting the theme cache can also help solve the problem.

For advanced users who have previously received Root rights, the cause may be a conflict of kernel modifications, in which case it may be necessary to flash the device through the computer using the Mi Flash Tool utility. However, for the average user, the best solution is to contact the service if the data reset did not help.

Hardware causes and display repairs

If neither the reset nor the reset returned the image to the screen, and the phone emits notification or vibration sounds, the problem is the hardware. The most common reason is the departure of the display plume from the motherboard, which often happens after falls or heavy impacts, in which case the white screen is a sign of loss of contact or damage to the matrix controller.

It can also be a cause of failure itself. OLED-If the phone falls into water, the white screen may be due to the oxidation of the contacts. In such situations, the software methods are powerless, and physical intervention of a specialist is required.

Independently disassemble modern Xiaomi smartphones is not recommended, as this will lead to loss of warranty and can damage water protection.It is better to contact an authorized service center for professional diagnostics. The wizard will be able to say exactly whether you need to replace the display module or enough to solder the plume.

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A permanent white screen after a device falls in 90% of cases indicates physical damage to the plume or matrix itself, which requires replacement.

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