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Sim card not registering

Discussion in 'Ask for Help' started by grr, Jul 18, 2013.

  1. grr

    grr New Member

    Friends,
    What could be the reason that SIM card is not getting registered on phone (samsung galaxy s2, for AT&T, Model - SGH i72)?

    Although phone is for AT&T, it worked once with T-mobile SIM. After that upon doing a factory reset, it is not registering T-mobile SIM. Any idea what could have gone wrong and how to fix it?

    (AT&T, T-Mobile - are USA GSM providers)

    Thanks, Grr
     
  2. avinash

    avinash Administrator Staff Member

    Can you check if the SIM works with any other device? IF yes, then we can troubleshoot the issue. And if its not working, that means there is some issue with the SIM.

    For the moment, try finding the networks manually and try to register the SIM with the network. And get back to the error message that comes after that.
     
  3. grr

    grr New Member

    yes Avi, the SIM is working fine on another phone.

    So do u suggesting to find the network manually?
     
  4. avinash

    avinash Administrator Staff Member

    yup
     
  5. Ashwin

    Ashwin New Member

    @Grr Try some other network's SIM card and see if it works on the S2.
     
  6. grr

    grr New Member


    at present only 1 sim is available to test.
     
  7. Ashwin

    Ashwin New Member

    My Guess is you will need to flash a different firmware. AT&T  may have restricted it to work only in the U.S
     
  8. grr

    grr New Member


    think so. btw is flashing = rooting?
     
  9. Ashwin

    Ashwin New Member

  10. grr

    grr New Member

    no, not trying with Indian network. Phone is in US.
     
  11. Ashwin

    Ashwin New Member

  12. grr

    grr New Member

    Update

    Same issue with Vodaphone & tata Indicom SIM. so I'm unable to use the phone.

    could you pls suggest what to do next, so as to make the phone working back again?
     
  13. Ashwin

    Ashwin New Member

  14. grr

    grr New Member

    thanks. I'm eagerly waiting for ur reply.
     
  15. Ashwin

    Ashwin New Member

    Check my previous post. Watch the video
     
  16. grr

    grr New Member

    Thanks Ash.

    I just need the phone to work with any GSM India Sim for now. So shall I still follow the steps in the video above?
     
  17. grr

    grr New Member

    using below (suggested by Ash, Avi), as IMEI is showing as 0/00
    http://forum.xda-developers.com/showthread.php?t=1611796

    Method-1

    [font=Arial, Helvetica, sans-serif]1.) Use busy box installer from the market and re-install even if u have it working-FAILED[/font]
    [font=Arial, Helvetica, sans-serif]installed below[/font]
    https://play.google.com/store/apps/details?id=com.jrummy.busybox.installer&hl=en

    [font=Arial, Helvetica, sans-serif]2.) If step one doesn't work, install super su updater, and update it, then try step one again.-[/font][font=Arial, Helvetica, sans-serif]DONE, but 1 above still fails.[/font]
    [font=Arial, Helvetica, sans-serif]installed below[/font]
    https://play.google.com/store/apps/details?id=com.noshufou.android.su
    https://play.google.com/store/apps/details?id=com.noshufou.android.su.fixer&hl=en

    Shows - No apps in list


    Installed below
    https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager&hl=en
     
  18. Ashwin

    Ashwin New Member

    Try flashing the Zip file via CWM.
     
  19. grr

    grr New Member

  20. Ashwin

    Ashwin New Member

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