iphone 4 to 4s sim card swap?

Discussion in 'Miscellaneous' started by acappellasaurus, Mar 9, 2012.

  1. acappellasaurus

    acappellasaurus Fleet Captain Fleet Captain

    Joined:
    May 11, 2001
    Location:
    Anchorage, Alaska
    I currently have an iphone 4 activated with AT&T. I was recently given an iphone 4s by a friend, that is/was activated with Sprint.

    My question is, can I just remove the sim card from my AT&T iphone 4 and stick it in the 4s and have it start working? Could it be that simple?
     
  2. Mr. B

    Mr. B Vice Admiral Admiral

    Joined:
    Dec 28, 2002
    Location:
    New Orleans
    The phone will have to be unlocked first, but the 4S is a world phone (GSM and CDMA capable) so it should work if unlocked.
     
  3. acappellasaurus

    acappellasaurus Fleet Captain Fleet Captain

    Joined:
    May 11, 2001
    Location:
    Anchorage, Alaska
    Even if my current phone (the 4) is activated with AT&T and the other phone (the 4S) is/was activate with Sprint?
     
  4. Mr. B

    Mr. B Vice Admiral Admiral

    Joined:
    Dec 28, 2002
    Location:
    New Orleans
    I'm not sure, but if you already have both phones on hand... no harm in giving it a shot.
     
  5. acappellasaurus

    acappellasaurus Fleet Captain Fleet Captain

    Joined:
    May 11, 2001
    Location:
    Anchorage, Alaska
    Thought about just trying it, but if it doesn't work, I don't want my other phone (the 4) to stop working somehow if I put the sim card back where it came from.
     
  6. zephramc

    zephramc Commodore Commodore

    Joined:
    May 13, 2001
    Location:
    California
    Your Iphone4 will not stop working. It will likely go to the No Sim Detected screen, but that's the worst. Putting the SIM back in should fix it. If you have an AT&T old phone that's still active with a SIM card, you could put that card in and the phone would work (sans 3G data).

    In regard to the 4S, as Mr. B said, it needs to be unlocked. Look at UltraSn0w. I used it for Iphone 2, 3G and 3GS before and it's pretty simple. Never for the 4/4S though. After googling it, they may be having some problems with the newest iOS version and the corresponding basebands.

    I'd try it. You could brick the phone, but I think it's unlikely. The other option could be to sell the 4S out on Craigslist for $400-$500 and pocket the cash.

    Anyways good luck.
     
  7. ares93

    ares93 Commodore Commodore

    Joined:
    May 5, 2010
    Location:
    ares93
    ^ Iphone's are pretty damn hard to hard-brick. Soft-bricking it is easier, yes. But those are easy to fix.