About using your smartphone as a tethered modem
Depending on your wireless service plan or administrator, you might be able to share the Internet connection on your BlackBerry smartphone. For example, if you are travelling, you can use your smartphone's Internet connection to access the Internet on a laptop or tablet.
To use your smartphone as a tethered modem with a laptop, you must connect your smartphone with your laptop using a USB cable and open the BlackBerry Desktop Software. To use your smartphone as a tethered modem with a BlackBerry PlayBook tablet, you must pair your smartphone with your tablet using Bluetooth technology.
While using your smartphone as a modem, you might not be able to use your smartphone's Phone application, Messaging applications, or applications that use the Internet. To receive a phone call, your smartphone might turn off the tethered Internet connection.
For more information about tethering, see the Help on your BlackBerry PlayBook tablet or in the BlackBerry Desktop Software.