Why are there some pre-installed or system applications that won't allow me to turn on app notifications, clear cache, block location access, or change anything within the app at all? How do I know if these system apps are safe or they are installed malware and my phone and data have been compromised??
System apps are easy to find by name if versed in the phone workings as for other apps often a game or bank app for example i.e bloatware get added those you should be able to uninstall
System apps be calendar clock list is kinda long to type out but ones that you can remove be games usually a few on there might see Amazon shopping fir example that's optional but most in list are System related
