If you are tethering to the internet through your mobile and your notebook is low on power you may want that connection to use the least possible power for your notebook. A USB connection will charge your phone and drain the notebook battery. Wifi and Bluetooth also require some power.
How does energy usage for a notebook compare for the following?:
- usb connection to a phone
- wifi connection to a phone
- bluetooth connection to a phone
Assume light browsing, and a low usage of bandwidth.