ATT SIM Swapping - GS3 and iPhone 5

[Frost Forged]

What's good people?

I own a Galaxy S3 running CM10 and an iPhone 5. I purchased a Nano to Micro SIM adapter and I want to get things set up so I can switch back and forth as needed. What's the best way to go about doing this? From what I understand I can't just swap the SIM card because ATT has separate data plans for iPhones and everything else. Is there a way around this? Or am I going to have to walk into ATT and have them activate it every time?

Thanks in advance for your help.

 

[pnd4pnd]

i did this and it worked fine with no plan changes.

 

[dirtbikerr450]

I think you may have to switch data plans

 

[cpolly69]

i made the leap from ifail to gs3 a while back and i had to get a different sim card when i did - i also had to change my plan -
i still have iphone laying around tho so if you do fig out a way to do this, please post up...