luckily i read this post.. i'm under the iValue 100 also.. din use much data though.. if normal surfing 1 month need around how much MB? no youtube, no downloading..

u use safari only for data or other apps as well?? could it be some usage are not tracked in the iPhone?

I kena from maxis charging me rm346 celcom rm200 something for Internet usage.. Can read from my blog for more info.. Anyway, to summarize, I don online but iPhone auto online when I open apps then kena.. My maxis is ivalue plan with 500mb free but still kena rm346.. D usage not talley with my iPhone data counter.. So what do u Think?

yes, my iphone is JB-ed but i have not installed any Cydia apps in my iphone.. my iphone usage is not talley with the maxis one.. they called me and asked me why wanna terminate so i told them the Rm346 thing and they agree to send me the itemized bill for free.. so i'll see what happen then..

I used SBSettings to close 3G, EDGE, Data, and also used iphonenodata.com to close all connections, still there is some leakage.. i have no idea now.. why cant just stop everything?

dont worry, after updating iOS 4 u can switch off the data on UN-JB iPhone.. hehe