Originally Posted by jmwking
I thought the bb maintained a minimal open data connection at all times for push email (or at least a very frequent polling). I don't claim expertise, though.
Posted via BlackBerryForums.com Mobile
No, the device doesn't poll. If data needs to be sent to the device, the BlackBerry servers poll the device's PIN to see if it is connected. If it is, the data is sent. Otherwise, no data is sent or received.