A mobile network connection allows your BlackBerry device to make calls and, if you have a data plan, use data services
such as Internet browsing. In some locations, such as in a hospital or on an airplane, you might need to turn off your mobile
network connection, but usually you can just leave your mobile network connection turned on.
In most cases your device automatically connects to the appropriate wireless network when you travel outside of your
wireless service provider's coverage area. If you're not sure if your device is set up for roaming, or what roaming fees will
apply, it's a good idea to check with your wireless service provider before you travel.