Turn off the Wi-Fi calling option if the blue screen problem occurs when attempting to utilize iWork apps and the phone reboots. This approach 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 programs that aren't working properly. Try disabling or uninstalling the program if the blue screen shows after downloading, installing, or using it. Otherwise, instead of updating the defective applications, 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. Should this be a software bug that is acknowledged by Apple, then it’s typically addressed by a new software update containing a fixed patch.