One of the problems which we faced in our iPhone X after upgrading to iOS 12 is that WhatsApp keeps showing blank white screen. The app is not crashing but at the same time not showing any content or the chat list. The messages and notifications keep coming like before but opening the notifications take us to the same blank white page.
If you are facing the same problem with your iPhone too after the update then here is a simple solution about the issue.
Steps to fix the WhatsApp white screen issue on iPhone X iOS 12 update
Conclusion
After that, you have to set up the WhatsApp again to use it, the app will restore the backup from the iPhone or from the cloud. You can do this with other apps too if those are giving you the same problem as WhatsApp. You can also try to reset the app from the apps list in Settings.
