Iphone 12 display issue

Hello Sahil6011,

Thanks for that info and for choosing the Apple Support Communities. If we understand correctly, you are having an issue with your new iPhone display flickering unexpectedly. First, see if the steps in this Apple resource help with your situation:

If the screen isn’t working on your iPhone or iPad

Next, use your Mac or PC to backup and restore your iOS software to factory settings, as this process erases the information and settings on your device and installs a fresh copy of the latest iOS software. Temporarily set up your phone as new to test your issues, and then restore your back up and test the issues again.

How to back up your iPhone, iPad, and iPod touch

Transfer photos and videos from your iPhone, iPad, or iPod touch

Restore your iPhone, iPad or iPod touch to factory settings

Restore your iPhone, iPad, or iPod touch from a backup

Cheers!

Thanks for replying, Sahil6011, and that additional info, it really helps! At this point, please contact Apple directly for further assistance with your situation:

Get Support 

Have a great day and thanks for using the Apple Support Communities!