"Android has a bluetooth bug, update to February 2020 security patch to mitigate or turn off bluetooth"
*checks phone* May 2019
https://lifehacker.com/update-android-to-fix-a-major-bluetooth-bug-1841523530
I don't know how Bluetooth works but I just kinda assumed it was horribly broken but I also own a smartwatch so I can't really turn it off