Seamlessly switch sim from iPhone 3G and iPhone 4?

brayhite

macrumors 6502a
Original poster
Jun 21, 2010
873
0
N. Kentucky
I JB'd an old 3G, and I was wondering if I could switch sims from my iPhone 4 to the 3G whenever I wanted (made an adapter) to mess around with the JB for a day without having to make any account changes on my bill or anything (AT&T). Sorry if there is a thread about this already. I MRoogle'd but found only things about sim swapping from 3Gs to 3GS's. Just wanted to clarify about the iP4 to 3G.
 

dgstan

macrumors 6502a
Jun 29, 2010
625
1
I JB'd an old 3G, and I was wondering if I could switch sims from my iPhone 4 to the 3G whenever I wanted (made an adapter) to mess around with the JB for a day without having to make any account changes on my bill or anything (AT&T). Sorry if there is a thread about this already. I MRoogle'd but found only things about sim swapping from 3Gs to 3GS's. Just wanted to clarify about the iP4 to 3G.
Yes you can, but be careful. I made an adapter to put my microsim into my 3G and managed to tear out a couple of the contacts on the SIM connector in the 3G. Make sure the microsim fits into the adapter very cleanly and that it won't get loose inside the other phone.

There are some posts here that show how to do it or just look it up on Google.
 

brayhite

macrumors 6502a
Original poster
Jun 21, 2010
873
0
N. Kentucky
Well I made the adapter when I did the unlimited data trick and it worked in a friend's 2G. I just tried it in my 3G and it said no sim. Thinking my sim was ruined, I put it in my iP4 and it worked fine. So I don't know.
 

brayhite

macrumors 6502a
Original poster
Jun 21, 2010
873
0
N. Kentucky
So I'm assuming that as long as the phone recognizes the sim, I will have no problems going back and forth between them, using them freely without change to my account or billing? I currently have unlimited data on a family plan.
 

dhlizard

macrumors G4
Mar 16, 2009
10,214
119
The Jailbreak Community
So I'm assuming that as long as the phone recognizes the sim, I will have no problems going back and forth between them, using them freely without change to my account or billing? I currently have unlimited data on a family plan.
Yep, just be careful putting the microsim into the adapter and the adapter into the 3G
 
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