I have some apps which I need them to synchronize in the background but they don’t, even with battery optimization turned off. I’ve tried using an app called PhoneProfilesPlus but I don’t need whole profiles, I just want an app to be opened and that’s it.
Another problem I have and this may be at purpose for Android security reasons, is that even with PhoneProfilesPlus, when I set up an app to be opened in the background, the app only opens specifically when I turn on my screen, and for some dumb reasons the apps that I mentioned need to be in the main screen to be synchronized.
If by “turn on your screen” you also mean unlocking it, in recent versions of Android, the user data partition remains encrypted until the first unlock after a reboot. Your apps will not and can not run until decryption.
What about admin apps?