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iPhone Iphone sim switch

W

WCC1

macrumors newbie
Original poster
I'm new at this forum stuff so please bear with me. I want to upgrade to an Iphone 4s but still be able to take the sim card and continue to use it in my
3gs whenever I want to and have full capability in both phones. I have the adapter but the phone people at my store say that the data would not work on the 3gs with the 4s sim installed. They say the phone would make calls fine in either phone. Something about a code that is assigned each different phone being unique. Does this make sense to you guys and would there be a way around this?
thanks
 
Depends on the carrier.
I use AT&T and swap sim in and out of 3 different iPhones.
Voice and data always work.
 
dhlizard said:
Depends on the carrier.
I use AT&T and swap sim in and out of 3 different iPhones.
Voice and data always work.
Click to expand...

I use ATT also. My account is thru my local phone company but it is ATT network. My bill just comes from my phone company. If you do this looks like I could as well. Thanks for responding.
 
If it is an AT&T mvno, just remember the MMS service requires different APN settings than the standard AT&T settings (sure you are aware of this already)
 
PsstGreek said:
Mobile virtual network operator, in other words a major carrier's cheaper network.

Ex. T-Mobile and SimpleMobile
Click to expand...

Ok, thanks for the info. My phone company uses ATT's logo and sales brouchures so I'm thinking that they are not a mvno?
 
PsstGreek said:
Some mvno companies run off the major carrier's towers as well.
Click to expand...

ALL mvno's run off the major carrier's towers and networks.
They buy the time in bulk and resell it to us.

And T-Mobile is NOT an mvno.
They have their own network (at least in the US they do)
 
dhlizard said:
ALL mvno's run off the major carrier's towers and networks.
They buy the time in bulk and resell it to us.

And T-Mobile is NOT an mvno.
They have their own network (at least in the US they do)
Click to expand...

Yes, he meant Tmobile sells to a mvno called SimpleMobile.
 
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