What your privacy settings on your smart phone should look like

The authorities/corporations want/need you to use smart phones for all internet related activities, as they collect the data you generate.

The problem there for you or rather your privacy is that this is not the best choice, as the smart phone is a device the leaks data many times a minute 24/7 compared to a personal computer not running Windows or a Macintosh. 

The leaks a even worse with closed source proprietary apps, where your face data, environment recognition, what's on your phone, contacts, voice data and photos are all accessed by the apps.

As a result, if you are truly concerned about your privacy, then you should not use Google (Samsung, Motorola, Nokia, etc) or Apple smart phones, but rather a 'de-Googled' one.

This will help keep your data on your phone, unless of course you install the various social media, games and government apps most people install.

The Advanced Privacy menu is only available on 'de-Googled' phones (Sony, Samsung, Nokia, OnePlus, etc) where an iPhone cannot be 'de-googled' as it does not run Android, but Apple's iOS.