Turn off the Wi-Fi calling option if the blue screen problem occurs while attempting to utilize iWork apps and the phone reboots. This method has been offered as a working solution by some people who have had the same problem on their iPhones. However, this is only a band-aid solution.

At a time, only use one app. All apps that aren't in use should be closed.

Disable or uninstall any applications that aren't working properly. Try disabling or uninstalling the app if the blue screen shows after downloading, installing, or using it. Otherwise, instead of updating the defective apps, you should update them.

Update the iOS firmware on your iPhone. Others advise that you update your iPhone's iOS to the most recent version. If Apple recognizes a software bug, it will usually be resolved with a new software update that includes a remedy patch.