How to return the color screen to Android Samsung

The sudden transformation of your smartphone display into a black and white image can cause panic even in an experienced user. It would seem Samsung Galaxy out of order, but in most cases the problem lies in the software settings, and not in the physical breakdown of the matrix. Users often accidentally activate special accessibility or power saving modes that change color rendering to save battery power or reduce eye strain.

Returning the usual colorful picture on Android devices of the South Korean brand usually takes only a few minutes. You don't need complex tools or a visit to a service center if it's a software glitch. We will analyze in detail all the possible reasons for the monochrome screen and provide step-by-step guide for eliminating each of them, starting from the most obvious settings and ending with hidden engineering menus.

Checking the power saving mode and Energy Saver

The most common reason why the screen Samsung becomes black and white is the activation of aggressive energy saving modes. The system automatically switches the color palette to grayscale to reduce processor and display power consumption. This is a standard feature that allows you to extend the operating time of the device in critical situations when the battery charge is at a minimum.

To check and disable this feature, you need to go to the power settings. Navigation may vary slightly depending on the shell One UIversion, but the general path remains the same. You need to find the section responsible for the battery and make sure that the maximum saving mode is deactivated.

Follow the following steps to disable the mode:

• 🔋 Go to Settings and select Device maintenance or Battery.
• 📉 Click on the section Power saving mode.
• ⚙️ Check if it is active switch Maximum energy saving, and turn it off.
• 🎨 If the normal saving mode is enabled, click on it and make sure that the option Change screen style is not set to "Grayscale".

Sometimes the system suggests turning on this mode automatically when a certain charge percentage is reached. If you want to avoid colors suddenly disappearing in the future, check the auto-on settings in the same menu. Turning off this feature will restore the brightness and saturation of the display instantly.

Accessibility settings and Sleep mode

The second most popular reason for a monochrome screen is the Sleep Mode or Rest Time feature, which is included in the Digital Wellbeing and Accessibility Tools package. This feature is designed to help the user fall asleep easier by removing bright and stimulating colors from the screen at a specified time.

Activation of this mode often occurs accidentally through the quick settings panel or according to a schedule. If your screen only turns black and white at certain times of the day, then this is definitely where the problem lies. To disable, you need to go to the section Accessibility in the main settings menu.

The deactivation process is as follows:

1. Open Settings and scroll down to the item Accessibility.
2. Select section Improve visibility.
3. Find option Mode sleep or Shades of gray.
4. Turn the switch to the inactive position.

It is also worth checking the "Improving visibility" section for other active filters. Sometimes users accidentally enable color inversion or color correction, which also distorts the picture, making it look unusual. Make sure that all switches in this subsection are turned off, except those that you really need for medical reasons.

USB debugging and developer mode

A more complex situation arises when monochrome mode is enabled through the developer menu. This often happens after connecting a smartphone to a computer to debug applications or transfer data. There is a specific anomaly simulation function in the debug menu that can force the display to black and white.

If you have recently experimented with system settings or connected your phone to a PC in debugging mode, check this section. Access to it is hidden from ordinary users, but if it was activated earlier, the settings could be lost. You will need to go to the hidden developer menu.

Procedure for checking:

• 💻 Go to Settings and scroll the list to the very bottom to the item Information about phone.
• 🔨 Press 7 times in a row on the item Build numberuntil a message appears that the developer mode is activated.
• ⬅️ Return to the main settings menu and find the new item Developer options (usually at the very bottom).
• 👀 In the "Debugging" section, find the item Simulation of anomalies or Monochrome.
• ❌ Set the value Disabled.

Please note that in some versions Android this item may be called "Simulate space with insufficient space" or have similar names related to emulation restrictions. If you can't find a specific item, try simply turning off Developer Mode completely at the top of this menu.

⚠️ Attention: Be extremely careful when changing settings in the Developer menu. Unnecessary changes to other settings may result in system instability or application failures. Change only those settings that affect color display.

How to get to the developer menu if the item is hidden?

If you do not see the "Developer Options" item even after clicking on the build number, it may be hidden in the "Software Information" submenu. Also, on some corporate firmware, access to this menu may be blocked by the device administrator.

Third-party applications and themes

Do not discount the influence of third-party software. Various launchers, applications for reading books in night mode, or utilities for protecting eyesight can intercept control of the display's color rendering. These apps often have their own permissions to overlay other windows, allowing them to change the screen filter globally.

Think about whether you've recently installed new themes, widgets, or battery optimization utilities. Some memory cleaners have built-in “night mode” functions that work more aggressively than system ones. If the problem appeared immediately after installing a app, it is logical to assume that the culprit has been found.

To diagnose, follow these steps:

1. Load your smartphone into Safe Mode. To do this, hold down the power button, then press and hold the "Power off" icon on the screen until the prompt to switch to safe mode appears.
2. If the colors return in safe mode, it means that the problem is caused by a third-party application.
3. Uninstall recently installed apps one at a time, especially those related to theming or battery.

Also check the settings of the theme itself. The store Galaxy Store or third-party theme stores may have design options that default to a muted or monochrome palette. Resetting the theme to the standard one will help eliminate this factor.

Hardware problems and display diagnostics

If all software methods did not help and the screen remained black and white even after resetting the settings, there is a possibility of a hardware malfunction. Damage to the display cable, oxidation of contacts after moisture, or failure of the screen controller can lead to loss of color. This is the most serious scenario that requires specialist intervention.

For initial diagnostics, you can use the built-in engineering diagnostic menu Samsung. It allows you to check the performance of each pixel and color channel separately. This will help you understand whether the matrix is ​​capable of displaying colors at all.

Use the following code to enter the testing menu:

#0#

Enter this combination in the "Phone" application (dialer). The service menu will open. Select test Red, Green and Blue in turn. If the screen is filled with pure red, green or blue color without distortion, then the matrix is ​​working properly and the problem is purely software. If colors are not displayed or the screen flickers, repair is required.

Symptom	Possible cause	Solution
B&W screen only when battery is low	Mode energy saving	Disable in battery settings
B&W screen at certain times	Sleep mode / Digital well-being	Set up schedule in accessibility
Colors are distorted (inversion)	Visibility settings	Disable inversion in the accessibility menu
Stripes on the screen + lack of color	Damage to the matrix or cable	Replacement of the display in service center

⚠️ Attention: If your smartphone has recently been dropped or come into contact with water, do not try to disassemble it yourself. Moisture could cause a short circuit in the power circuit of the backlight or display controller.

Resetting settings and extreme measures

When none of the above methods worked, the last software method remains - a full reset to factory settings. This action will erase all user data, apps and settings, returning the phone to its out-of-the-box state. This is guaranteed to eliminate any software conflicts that caused the color rendering to fail.

Before performing this procedure, it is critical to back up all important data. Use the cloud service Samsung Cloud or synchronization with your account Google. Save photos, contacts and documents to an external drive or computer.

Instructions for performing a reset:

• 🔄 Go to Settings → General settings.
• 🗑️ Select item Reset.
• ⚠️ Click Reset data and confirm with a password or PIN code.
• ⏳ Wait for the device to reboot and initial setup.

If even after a factory reset the screen remains black and white, this is a clear signal of a physical malfunction of the component. In this case, software methods are powerless, and the only solution is to contact an authorized service center to replace the display module.

Frequently asked questions (FAQ)

Why did the screen turn black and white by itself at night?

Most likely, you have activated the "Rest Time" or "Sleep Mode" mode in the accessibility settings. Check the schedule in the section Accessibility → Improved visibility. There you can set the grayscale filter to automatically turn on at night.

Is it possible to make the screen specially black and white?

Yes, this is a useful feature for reducing dependence on a smartphone. You can enable it via Settings → Accessibility → Visibility improvements → Grayscale. Many users do this so that the phone looks less attractive and does not distract from important matters.

Does a system update affect screen colors?

Sometimes after a major update One UI accessibility settings may be reset or changed. Also, new versions may interpret power saving modes differently. If the problem occurs immediately after the update, check all the Accessibility menu items again.

Is a black and white screen a sign of a problem?

In 95% of cases, this is a software setting. However, if resetting the settings does not help and the service testing menu (#0#) shows no colors, this may indicate damage to the cable or display controller, which requires repair.