Indeed. BUT, eventho you off edge and 3g using jb apps, somehow it will still transmit but low usage. I did this and usually will sent/receive only around 1 to 5kB per day. No big deal.

Mess up with APN will not help. iPhone somehow will still able to surf the net. Try to mess up your APN and launch Safari, you'll know what I'm saying about.

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Added on November 3, 2009, 9:42 amTake note that some apps got ads inside. Say SBSettings. Underneath the apps, there is a little banner.

Say Tap Tap Revenge, I tried to mess up with APN before, before jailbreaking and the usage somehow boost up until 400kB just for the application to run.

This post has been edited by rip_code: Nov 3 2009, 09:42 AM

I didn't try fakeapn before but whenever I disable edge/3g using sbsettings, I also can't connect to the internet. But try to monitor your usage. Might somehow increase but low. I don't really know how can my iPhone Tx & Rx.