Before Android had finer-grained permissions[0], I used Xposed, a framework that allowed deep modifications to the OS and apps, and a permissions management too

Before Android had finer-grained permissions[0], I used Xposed, a framework that allowed deep modifications to the OS and apps, and a permissions management tool called Xprivacy. It provided the kind of features you're describing, including fake locations that apps could not detect. Yes, Facebook, you can access my location. I'm in Pyongyang, North Korea. Successors to Xposed and Xprivacy exist, but I have not used them. It may be time to revisit that. [0] Many people, including me are still not satisfied with Android's permissions.