iOS13 NSBluetoothAlwaysUsageDesc

NSBluetoothAlwaysUsageDescription

For deployment targets earlier than iOS 13, add both NSBluetoothAlwaysUsageDescription and NSBluetoothPeripheralUsageDescription
to your app’s [Information Property List]file.

Devices running earlier versions of iOS rely on NSBluetoothPeripheraUsageDescription,
while devices running later versions rely on NSBluetoothAlwaysUsageDescription.