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.