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.