It seems like the screen flickering issue that you're experiencing in WhatsApp might be related to a software glitch or a conflict with the system's display settings. Since it’s not happening to everyone, one possible solution could be clearing the cache of WhatsApp or reinstalling the app to fix any corrupted data. Also, if you're using a modified version of WhatsApp like NA WhatsApp, this could sometimes cause display issues. I recommend switching to the official
WhatsAppNAapk or updating to the latest version, as it could resolve this problem. Make sure you have the latest updates for your iOS device as well. Let me know if the issue persists!