Iphone 12 pro screen is not pure black

Hi Rfesor,

Thank you for posting in the Apple Support Communities. We understand the color on your iPhone 12 Pro is not displayed correctly. Let's follow the information and resources linked below, to resolve this issue.

"Get the most out of the Super Retina and Super Retina XDR displays

With the latest version of iOS, your iPhone is specially designed to minimize the effects of long-term use and extend the viewing life of the Super Retina and Super Retina XDR displays. Here are some additional things you can do to get the most out of your Super Retina or Super Retina XDR display:

• Update your iPhone to the latest version of iOS. When a new update is available, you'll see a prompt to update. You can also check for updates in Settings > General > Software Update.
• Use Auto-Brightness to automatically adjust the brightness of your display based on the ambient light in your location. This setting is on by default. To check this setting, go to Settings > Accessibility > Display & Text Size, then scroll down and turn on Auto-Brightness.
• Set your iPhone to turn off the display when you aren’t using it. Choosing a shorter time is recommended. To adjust this setting, go to Settings > Display & Brightness > Auto Lock.
• Avoid displaying static images at maximum brightness for long periods of time. If you have an app that keeps your display on when you aren’t actively using your iPhone you can temporarily reduce the brightness level using Control Center."

About the Super Retina display and Super Retina XDR display on your iPhone

Cheers!