A few questions about unlocked or unlocking a phone

Discussion in 'iPhone' started by patricem, Dec 29, 2015.

  1. patricem macrumors 6502


    Nov 18, 2005
    1) When you buy a 'no sim' phone from Apple, does that mean it can be used on any network, GSM or CDMA, and you can switch when you want from one to another?

    2) If you buy a used phone that is locked to a network but paid in full, can you unlock it to use on a different network?

    3) Once a Sprint phone is unlocked, it can be used on any GSM network, correct?

    4) Has anyone used or tried US Mobile?

    Thank you in advance for answering.
  2. wongster macrumors regular

    Sep 27, 2014
    1. yes
    2. think you'll have to have the original owner unlock it
    3. yes from iPhone 6 and on
    4. no
  3. BeeGood macrumors 68000


    Sep 15, 2013
    Lot 23E. Somewhere in Georgia.
    1. I think GSM carriers require a SIM card. Someone please correct me if I'm wrong
    2. On AT&T, anyone can unlock the phone, but you need certain info that only the account holder would have, so basically, you'd want to get the seller to unlock before you buy.
    4.No experience with them. Sorry.
  4. eyoungren macrumors Core


    Aug 31, 2011
    ten-zero-eleven-zero-zero by zero-two
    1. They do. But so do all LTE networks, regardless of whether the carrier is CDMA or not. LTE is a version of GSM.
  5. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    1 yes
    2 depends on the model iPhone and what network is locked to.
    3 no. Depends on the iPhone model.
    4 never heard of that carrier.

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