A Wi-Fi network connection is one way to get data services on your BlackBerry device, but unlike using
the mobile network, using Wi-Fi doesn't add charges to your data plan. Your device is designed to try to
use saved Wi-Fi networks before it tries to use the mobile network for basic data functions such as using
the Internet or downloading apps. You can leave Wi-Fi turned on so that when you're in range of a saved
Wi-Fi network, your device can connect to it automatically.