Huawei Honor V30 has become a black and white screen, what s going on?

If the color display of the mobile phone screen is abnormal, please troubleshoot it according to the following scenarios:

Go to Settings > Healthy Use of Phone > Sleep Time Downtime and check whether the switch is on. When this setting is turned on, the screen will turn black and white when the phone reaches the set sleep time and downtime.

2. Check whether the e-book mode is turned on.

3. Check whether the color correction switch is turned on.

Color correction is to help friends with weak vision to identify the screen color more conveniently, and people with normal vision may feel that the screen color display is abnormal after turning it on. You can turn off this feature if you don't need it. Closure Method:

4. Check whether the color inversion function is turned on.

Color inversion can change the color of the text and background displayed on the screen. When turned on, the phone will turn into white on a black background. You can turn off this feature if you don't need it. Closure Method:

5. Check whether the simulated color space is turned on.

7 Still can't fix it?

If none of the above troubleshooting resolves, try resetting all settings on your phone.

If the problem persists, please back up important data in advance and bring the purchase voucher to the official customer service center for testing and processing.

Confirm that the simulated color space switch is turned on.

EMUI : Settings Advanced Settings > Accessibility, turn the color correction switch off or set > Developer Options > Simulate color space, select Disabled.

EMUI: Set > Smart Assist > Accessibility, turn off the color correction switch.

EMUI: Set > System > Developer Options > Simulate color space, select Off or Set > Smart Assist > Accessibility, turn the color correction switch off.

Go to Settings > Smart Assist > Accessibility, turn off the color correction switch or set > System > Developer Options > Simulate color space and select Off.

Settings > Healthy use of mobile phone > Sleep time > Sleep time, after turning on this setting item, when the phone reaches the set sleep time, the screen will also turn black and white.

Hello netizens. This must be a problem with the quality of the phone, and it is best to go to Huawei's after-sales service. They'll take care of it for you!

Confirm that the simulated color space switch is turned on.

Settings》Advanced settings.

Accessibility to turn the color correction switch off or set.

Developer Options.

Simulate a color space, select Deactivated.

Set up. Smart Assist.

Barrier-free, turn off the color correction switch.

Set up. System. Developer Options.

Simulate a color space, select Off or Set.

Smart Assist. Barrier-free, turn off the color correction switch.

magicui

Please go to Settings.

Smart Assist. Barrier-free, turn the color correction switch off or set.

System. Developer Options.

Simulate a color space, select Off. Set up.

Healthy use of mobile phone "Sleep time" Sleep time, after turning on this setting item, when the phone reaches the set sleep time, the screen will also turn black and white.

Confirm that the simulated color space switch is turned on. EMUI : Advanced Settings > Accessibility, turn the color correction switch off or set > Developer Options > Simulate color space, select Disabled.

EMUI: Set > Smart Assist > Accessibility, turn off the color correction switch. emui ：

Set > System > Developer Options > Simulated Color Space, select Off or Set > Smart Assist > Accessibility, Turn the Color Correction Switch Off Go to Settings > Smart Assist > Accessibility, Turn the Color Correction Switch Off or Set > System > Developer Options > Simulate Color Space, select Off. Set > sleep time, after turning on this setting, when the phone reaches the set sleep time, the screen will also turn black and white.

If the Honor v30

The screen turns black and white, try to fix it with the following steps:

1. If the phone becomes white on a black background, the color reversal may be enabled, and you can change the color of the text and background display on the screen after turning on this function. You can turn off this feature if you don't need it. Closure Method:

2. If the screen background is dark, it may be turned on dark mode or dark power saving**, it is recommended to turn it off. How to turn it off: Go to Settings, search for and click Dark Mode or Dark Power Saver**, if the switch is on, turn off the switch.

3. If the screen is gray, you may have set the sleep time for healthy use of the phone.

When the time is deactivated, and the screen is grayed out, the screen will turn gray when the time limit is reached. It is recommended to turn off this feature. Closure Method:

4. If the screen turns gray, you may open the e-book.

mode, when turned on, it is suitable for reading and text scenes, the screen will turn gray, if you don't need it, you can turn off this function. How to turn off: Go to Settings, search for and tap E-book mode, and turn off E-book Homicide mode.

5. If the above troubleshooting does not solve the problem, you can try to restore all the settings of your phone.

Confirm that the simulated color space switch is turned on. EMUI : Settings Advanced Settings > Accessibility, turn the color correction switch off or set > Developer Options > Simulate color space, select Scatter Difference is disabled.

EMUI: Set > Rinse Smart Assist > Accessibility, and turn off the color correction switch. emui ：

Set Changchun > System > Developer Options > Modular ......

Confirm that the simulated color space switch is turned on. EMUI : Advanced Settings > Accessibility, turn the color correction switch off or set > Developer Options > Simulate the high-slip color space, select Disabled.

EMUI: Set > Smart Assist > Accessibility, turn off the color correction switch. emui ：

Set > System > Developer Options > Simulated Color Space, select Off or Set > Smart Assist > Accessibility, Turn the Color Correction Switch Off Go to Settings > Smart Assist > Accessibility, Turn the Color Correction Switch Off or Set > System > Developer Options > Simulate Color Space, select Off. >After turning on this setting, when the phone reaches the set sleep time, the screen will also turn black and white.

Go into the phone settings to find the system of Huai Roll system update, go in and find the developer options, lead Yunyu go in to find the analog color space, go in to see if it's set to full color blindness, turn it off quietly and then see if it's okay.

This is when you accidentally turned on the reading and hail mode, select the display function in the phone settings, click on the color and display pure sail, there is a reading mode in it, turn it off and return to normal.

The phone turns into a black and white screen, it is recommended that you do it as follows:

1. Please check whether the sleep time function of the healthy use of the mobile phone is enabled: enter the settings "Healthy use of the mobile phone" to disable the laughing time, after turning on this setting item, when the mobile phone reaches the set sleep time, the screen will turn black and white.

2. Please check whether the e-book mode is turned on3. If the above troubleshooting still can't solve your problem, you can try to restore all settings on your phone.

The following settings will be reset: Wi-Fi, mobile data, and Bluetooth network settings, desktop layout, fingerprint data, face information, lock screen password, and all app (system apps and third-party apps) permission settings.

4. Still can't be solved. , find the Honor mobile phone preset application - My Honor app, open it to enter the service page, click Quick Service >> In-store service Store service service store, you can query the nearby service center, it is recommended that you contact the service center in advance before going to the service center to determine the business hours to facilitate your travel

Operating the phone: Honor Magic4

Operating system: The specific operation steps for the Honor phone to suddenly become a good black and white screen to return to normal are as follows:

1. Open your HONOR phone and touch Settings.

2. Click to set the display and brightness of the list.

3. Click the button on the right side of the e-book mode to turn off the switch, so that the screen of the Honor phone is adjusted from black and white to color.

Precautions for using Honor mobile phones:

1. The use of mobile phone holsters, holsters are equivalent to adding an extra coat to the mobile phone, one is to reduce the wear and tear of the mobile phone shell, and the other is to reduce the injury of the mobile phone when falling or encountering water.

Of course, this does not mean that the mobile phone will be invulnerable after adding a leather case, and you must still be cautious when using and placing it to avoid damage to the mobile phone. It is best to use the original matching case, if not, you need to choose carefully, in case the deviation of the shape of the two affects the use of the phone.

2. Pay attention to the use environment of the mobile phone, there are fine seams or small holes on the mobile **, water vapor is easy to infiltrate and cause the circuit board to be eroded, so do not use the mobile phone in the rain or in the bathroom. At the same time, do not put the mobile phone at the air outlet of the lead air conditioner, because the water vapor condensed in the mobile phone will invisibly corrode the machine board.

In addition, the erosion of water vapor on the circuit board is increasing over time, and it may not seem to have any effect at first, but by the time the failure occurs, it may be too late.

3. Pay attention to the way to carry, everyone's method of carrying a mobile phone is different, good carrying habits can make the mobile phone prolong life, and some bad carrying methods will lead to a large increase in the probability of damage to the mobile phone.

For example, some friends are used to putting their mobile phones next to their pants or in the back pockets, if they are accidentally pressed while sitting, or if the mobile phone is squeezed and falls to the ground when walking, it will cause damage to the mobile phone. <>

Check if it's turned onE-book mode

CloseE-book modeCheck if it's turned onColor correctionSwitches:

If the switch is on, turn it off.

Check if it's turned onColor inversionFeatures:

Check if it's turned onDark modeorDark power saving**

Go to Settings > Battery >Dark power saving**Go to Developer Options and check if it's turned onSimulate a color spaceswitch, you can do the following:

willSimulate a color spaceThe status is selected as Retired (Closed).

Huawei V30 turns into a black and white screen, it should be turned on e-book mode, you can go to settings - display and brightness, go to turn off e-book mode.

If it's not a wallpaper theme issue, go to Settings Smart Accessibility Visual Color Inversion to toggle and see.