and therefore can be used as a mobile broadband modem. Some mobile network operators charge a fee for this facility, if able to detect the tethering. Other networks have an allowance for full speed mobile broadband access, which--if exceeded--can result in overage charges or slower speeds.

An Internet-accessing smartphone may have the same capabilities as a standalone modem, and, when connected via a USB cable to a computer, can serve as a modem for the computer. Smartphones with built-in