Internet tethering allows you to share your BlackBerry smartphone's connection to the mobile network with one other device (e.g. laptop, tablet, etc.) so that you can access the Internet on your other device anywhere that your BlackBerry smartphone can connect to the mobile network.
Additional charges may apply for using Internet tethering. Additionally, some services (e.g. email, BlackBerry Messenger, etc.) are not available on the BlackBerry smartphone during an active Internet tethering session.