you dont have to jb to turn off your edge/3g ...just go to setting set ur apn into rubbish and you wont get connected

@ Seaedge

if u didnt put anything on apn ...the system will use the default setting on your carrier which is ...it will activate....

@iPhone2008

after setting the nonsense apn try turn off and turn back on the phone...see how it works

did u think im just new in the iphone? ive been watching this forum since the iphone first launch..i only seldom reply here...the method its still working...and i don't know why u still can connect to it?

here are the screenshots as a prove

this are my setting on apn...


as you can see in this screenshot even the Edge is turn on but the ip is not available so it wont work



this for proving it wont work


it only work if u set the correct apn and your 3g/gprs will connected and give the ip..only it will work