You are actually better off shutting 3G off instead of cellular data. That way if you forget to turn it back on before you leave, you still will get emails, access the internet, etc... When the phone goes to sleep, the wifi disconnects and goes back to cellular. Just look at the top of the phone when you wake it up when it's on wifi, it will first show the 3G symbol before switching to wifi in a couple of seconds.
To shut off settings>general>network>enable 3G
**** edit ****
I forgot that this option is not available on the VZW iPhone. Tell your AT&T friends though.
Last edited by j7469; 02-17-2011 at 10:16 PM.
02-16-2011 08:13 AM