Users complain about iOS 13 privacy policy changes caused a large number of Bluetooth permission on app
Apple has added a new privacy measure for the iOS 13 system, the App must obtain user permission to access the Bluetooth function, resulting in a large number of app popping up annoying permission application bubble notification. The reason for this limitation is that some companies have been able to secretly sneakily track your location over Bluetooth by using beacons in stores, shopping malls, and even on popular city streets if they’re placed within range of a place you’d walk by. So Apple is doing this to protect everyone’s privacy.
“At the most basic level, I think some iPhone owners are going to wonder and maybe even assume that they must grant Bluetooth permission for music and other media apps to continue working with their Bluetooth earbuds, headphones, or speakers. It’s a reasonable question when you see that an app “would like to use Bluetooth.” (To be clear, you don’t have to. Bluetooth audio is handled through system settings, is separate from apps, and will continue working for apps that you deny permission for.)”
Source: TheVerge