Wirelessly posted (8820)

Think this way: The blackberry is not a cell phone. It has a cell phone. And more.

The blackberry (and a cell phone (communicates with the cell towers via a radio. Both the blackberry and other similar devices, cell phones included, need to periodically send and receive info. For one thing, the blackberry needs to tell the network, I am here, for example.

The blackberry provides the user the ability to turn the radio off. New operating systems (4.1 or 4.2 onward?) Provided the ability to turn off data and leave voice on. And there has been bluetooth (another "radio"), and now there is wifi, too.

Long story short, no one would have been able to call you either, while you had the radio off.