3 Replies Latest reply: Oct 7, 2012 6:04 AM by KiltedTim Branched to a new discussion.
moey12 Level 1 Level 1 (0 points)

how to unllock a iphone 4 to any sim card

iPhone 4
  • matrixxzero Level 1 Level 1 (130 points)

    Call your carrier unless it is Verizon. Verizon doesn't use GSM on the iPhone 4 except for overseas. So, if it was ATT then call ATT and ask for unlock code. They will ask for your IMEI number which is found under Settings > General > About



  • matrixxzero Level 1 Level 1 (130 points)

    I just saw the CDMA in your description. I don't believe an unlock will help you but I could be wrong.


    Now, the iPhone 5 has an active SIM in the CDMA phones and already comes unlocked (Verizon only) and you can pop in an ATT SIM and use ATT service. But, I don't think you can do the same with the CDMA iPhone 4. Best to trade it in or use it on Verizon.


    Edited to clarify that only Verizon iPhone 5 is unlocked as far as the SIM goes. It was FCC mandated.


    Message was edited by: matrixxzero

  • KiltedTim Level 8 Level 8 (47,455 points)

    Only the carrier a phone is locked to can authorize unlocking it.


    If you have a CDMA iPhone 4, it can not be unlocked.