Auto Bluetooth Tether automatically enables Bluetooth Tethering as soon as you turn Bluetooth on.
It resolves the problem, that most devices forget the Bluetooth Tethering setting when Bluetooth gets disabled, or when the device gets rebooted.
Nothing to setup or configure.
Auto Bluetooth Tether is useful if other devices should be able to automatically connect via Bluetooth in order to use the Internet connection of the device, as e.g.
* Navigation devices (e.g. Tom Tom Smartphone Connected devices)
* Tablets that use the Internet connection of a smartphone via Bluetooth