My bill keeps saying I have data usage at the same hour after hour (12:10am, 1:10 am, 2:10 am) but I'm sleeping and my blackberry only has the 5 basic apps running. Now I'm maxing out my plan 100Mb. What the hell?
the way it works is instead of constantly poll ing the server the server assumes you're connected. every hour your BlackBerry sends a message to the server just to
say ' hi I'm still here' it's usually not a large data transfer. try keeping your phone on airplane mode or disable data before bed.