thanks for the explanations..
I have privacy guard with advanced options. can you tell me the difference between manual setting (long press), and toogle (single tap, and then the little shield icon on the right will toogle on/off)?
if I manually set the permission, the shield does not turn on, should i turn it on?
if I turn on the shield icon, what permissions will it block automatically (without us set it manually)?
edit: I see that manually set app's permission related to contacts will turn on the shield icon. does this mean by "enabling by default" (for new apps), it will automatically block all permission about personal data (contacts, calls, and calendar?)?