I recently got my parents a Bluetooth speaker, and they are very new to the smartphone arena. What I would like is to disable all of the Bluetooth functionality in their phones except for the ability to play music and place calls through the external speaker. That way, even if an attacker were able to infiltrate their phone through Bluetooth, they would not have any access to stored files/contacts, etc. I'm thinking it would be something like the following:
Global Bluetooth Functionality
Allow apps to:
Play music On/Off
Place calls On/Off
Share files On/Off
Share contacts On/Off
...
For instance, if a legitimate app or an infiltrator tried to share files while the "Share files" global setting was "Off," they would not be able to because the setting is disabled at a global level. But at the same time, if a speaker was connected and the "Play music" global setting was "On", then it would play fine. Is there such a feature in Android or iPhone? They have one of each, so information for either is appreciated.