I reset my Cellular data statistics yesterday and went to Settings > Cellular > System Services. I noticed that Bluetooth had used 3.3 KB of Cellular data. A few hours later, I noticed it had used 3.5 KB of data. While this isn't a lot, why is Bluetooth using any at all? If Bluetooth is off, shouldn't it not be using any data?
Could this be a sign of the Blueborne virus that can spread via bluetooth to multiple devices without detection?
Any info would be greatly appreciated.