hi, sidetrack a little. my apology if this has been asked & answered before.
whenever i need to go online, i have to turn on both 'Enable 3G' and 'Cellular Data'. i was demonstrated by two of my friends, just need to on 'Cellular Data', and both their iphone works just fine. i tried the same, and upper bar shows 'E', but i just couldn't get the Internet connection. anyone care to shed some lights?