Note: For users upgrading their S7 / S7+
Please note that we have been informed that some third party applications like Signal do not seamlessly upgrade during the process.
The reason behind this is that the nougat version of the app is not compatible with the Q version of the OS.
The solution to this is to uninstall and reinstall the latest build of the application.
Please note, this will cause a loss of application data in those specific applications.
Ensure you take a backup of the application data before proceeding with the upgrade.
This break in the application will also prevent the App Lounge from upgrading the particular application.
The issue has been reported on Signal for now. Maybe it is there in some other as yet unreported third party applications as well.
Pl let us know in this thread if other applications are also facing this upgrade issue.