Something went wrong to my iPhone today. I woke up this morning and when I looked at the Usage meter, the EDGE data transfer mysteriously increased by 30MB!!! WTF!!
It was only 2.3MB last night before I sleep. I remember I did check the usage meter last night because I wanted to see how long my battery has lasted for the last charge. And this morning, with similar intention, I happened to see my EDGE data transfer became 30.1MB!
I was like OMG what's wrong?! I began to worry and a few mins later when I go back to my phone to see the meter again, the EDGE usage jumped another 0.1MB. So it is actually using GPRS on its own throughout the night!
I have Wifi turned off all the while(and turn on unless I have to use it) because it often either heats up the phone or drains a lot of battery.
Has anybody experienced this before? oh man....30MB of GPRS is gonna be hell! The worst thing is I wasn't even using it and I don't even know what is it using for!

This is only my 3rd week using this phone....
Is there anyway to turn off that bloody hell EDGE?