Can anyone help explain what this does? I did a small search around the internet, and it came up with just about nothing. My first question is: I turned mobile data off, and yet, during the night, I was charged for data, so something leaked. Personally, I thought if this was because of this particular function. But maybe it was something else. So, I turned it off, but around the forums for other androids people seem to think that syncing doesn't work as well with this disabled. Does anybody know what might have happened? And could this function have been the thing that caused the leak. The leak, was actually for only 50 KB or so, but because I'm on Page Plus, it caused me to go under the required balance to refill of $29.95 and caused my plan to lapse. It's important for me for this not to happen again. Can anyone give any tips?