It’s almost certainly an Accessibility setting.
The steps below are ordered from easiest and most likely to solve the issue.
Once the issue is fixed, you don’t have to follow any further steps.
Your screens will be appear black and white, but when you take screenshots, they are in color.
Open your iPhone’sZoomsettings to turn off Zoomif it’s on.
The iPhone’s Zoom setting has a Grayscale color filter underZoom Filterin the Zoom tweaks menu.
This filter will turn the iPhone screen black and white when the Zoom feature is on.
In this case, Zoom doesn’t refer to the Zoom video service.
Zoom is a function inside iOS’s accessibility controls:controls>Accessibility>Zoom.
Press your iPhone’sLock Screenbutton three times in rapid succession.
you could configure this shortcut to switch an iPhone into grayscale mode, which may cause your issue.
Reset All Settingson your iPhone to return all tweaks to default.
It will turn off any iOS feature responsible for turning your iPhone screen black and white.
However, it will reset all other prefs, so this is the last resort.
While this resets all configs on your iPhone, it does not delete your content.
The iPhone supports several ways to make the display black and white via the accessibility options.
An iPhone screen may turn black and white due to a hardware issue.
It’s rare, however, so odds are the problem is in the iPhone’s prefs.
FAQ
If your iPhone screen is too dark, you likely need to adjust your brightness configs.
To adjust screen brightness manually, open Control Center and drag the brightness level up.
It’s also possible thatDark Mode is turned on.
you might also tryturning off iPhone auto-brightnessand disabling any blue light filter apps.
To troubleshoot the problem, restart the iPhone,put the iPhone in Recovery Mode, oruse DFU Mode.
