1. AC Question's Avatar
    My Samasung Galaxy S3 was unlocked from O2 in UK in April 2015 and has become locked again.
    How do I unlock a Sim Free Samsung Galaxy S3 which has become locked after 8 month being Sim free?
    01-27-2016 07:18 AM
  2. belodion's Avatar
    Who did the unlocking? Some unlockers don't do it properly.
    Or did you get the code from O2?

    Posted via the Android Central App
    01-27-2016 11:18 AM
  3. Kambiz Daneshyar's Avatar
    The unlocking was done by code given by O2
    01-27-2016 04:43 PM
  4. belodion's Avatar
    Welcome as a new member.

    Have you spoken to O2 about it?
    01-27-2016 11:30 PM
  5. Rukbat's Avatar
    An O2 phone would be GSM. Once it's carrier-unlocked, it can't be locked again. If it's rejecting another carrier's SIM card, something's wring with the phone.
    01-28-2016 12:19 AM
  6. Kambiz Daneshyar's Avatar
    The phone works with WiFi but not with a Sim card. Strange !!!!
    01-28-2016 05:07 AM
  7. belodion's Avatar
    The phone works with WiFi but not with a Sim card. Strange !!!!
    No, that does make sense. You can use wifi whether or not the phone has a SIM in it.
    01-28-2016 02:19 PM

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