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Thread: No sim card | Emergency calls only

  1. #1
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    No sim card | Emergency calls only

    I purchased my samsung galaxy s3 from ebay (used). When I got it, I popped in at&t's sim and my service worked. I've been using the service for 1 month and then decided to switch to spot mobile (tmobile). Ever since I've used this method (http : / /forum.xda-developers.com/showpost.php?p=34661189&postcount=1) to unlock my samsung galaxy s3 i747 (att) so I could use it with Spot mobile (tmobile mvno), the sim card didn't work. Then I tried re-doing that method and now I get no sim card | emergency calls only showing up on my phone no matter what I do. I've tried rebooting, wiping sim cards, blowing into the sim card slot, factory restoring my phone, but still no avail. Is there a method to undo this unlock, since at&t said that my imei WASN'T unlocked and they gave me an unlock code, but I can't use it because it won't detect ANY sim cards and probably WON'T show me the lock because I "unlocked" my phone. Please, help.

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    Sent with the HoFo App

  3. #3
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    Try googling, it should answer your question

  4. #4
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    Quote Originally Posted by danman0 View Post
    I purchased my samsung galaxy s3 from ebay (used). When I got it, I popped in at&t's sim and my service worked. I've been using the service for 1 month and then decided to switch to spot mobile (tmobile). Ever since I've used this method (http : / /forum.xda-developers.com/showpost.php?p=34661189&postcount=1) to unlock my samsung galaxy s3 i747 (att) so I could use it with Spot mobile (tmobile mvno), the sim card didn't work. Then I tried re-doing that method and now I get no sim card | emergency calls only showing up on my phone no matter what I do. I've tried rebooting, wiping sim cards, blowing into the sim card slot, factory restoring my phone, but still no avail. Is there a method to undo this unlock, since at&t said that my imei WASN'T unlocked and they gave me an unlock code, but I can't use it because it won't detect ANY sim cards and probably WON'T show me the lock because I "unlocked" my phone. Please, help.
    Once your phone is truly unlocked it is unlocked, you don't have to unlock it every time you switch providers. What you will need to do is update your apns to get data.
    You may have had a bad Sim from spot mobile, if it didn't work on your phone after change the apns testing the Sim in another phone would have been the next step. You may need to take the phone back to ATT and have them fix it.

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  5. #5
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    There might be a problem with SIM card, as everything looks good with your phone. Try that SIM in any other phone and also try some other SIM in your own phone too in order to verify where is the problem. If it is the phone then get it fixed from an authorized repairer and if it is the SIM issue a new one, as that's the only fix i see. If you have some know how about the hardware then these steps might help you:
    Fix all the misaligned pins or you can also chose to replace PCB holder too!
    Check SIM voltage when the SIM card is inserted, it should be around 1.8v.
    Trace every VSIM, SIM reset, SIM clk and SIM IO and Ground pins

  6. #6
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    maybe is sim card problem,you can try another sim card which is spot mobile (tmobile)

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