Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

CIA

macrumors 6502a
Original poster
Jun 17, 2003
681
539
My iPhone4 is having some issues, and while I sort it out I might need to revert to my old 3G. Besides the SIM adaptor (which seems easy to make) is there anything I need to be concerned about swapping the SIM from the 4 back to the 3G? I'm out of contract now from AT&T, and don't want to lose the unlimited data plan that I still have. Don't want to rock the boat and lose it by accident!
If I just plug the sim (with adaptor) from my 4 into my 3G will I be good to go?

Thanks in advance!
 
Nothing should happen. Just don't put a smartphone SIM into a feature phone as they have different plans for them!
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.