Question about Samsung Blackjack SGH-I607 Smartphone

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Blackjack no sim card or simcard error

I bought a blackjack second hand and the first week it worked fine. then a week later i started getting a no service error. Restart the phone it works fine for 20 minutes sometimes 2 hours then get a message stating no simcard found or simcard error. called cingular and ordered a new replacement sim. Got the same exact error. Any tips on how i can get this resolved ?

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  • vancestone hall
    vancestone hall Jul 22, 2007

    Since the blackjack was still less than a year old. ATT replaced it free of charge, but you have to go through all the support steps they ask you to undertake first. Including going to a store and having them swap your sim card.

  • prettyboy88 May 05, 2008




    i have a blackjack and it wont get service at all and if u sit and wait for it to get service it just comes up sim failure...plz tell me there is a way 2 fix it


  • moniquebeach May 08, 2008

    I am having the same problem with my Blackjack. It is about a year old, my husband gave me his old phone when he got the newest version. I had my SIM card from my Treo and I kept getting the "no SIM card" message and my phone would shut off during calls. I went to the AT&T store and the guy there told me that since my SIM card was from the Treo, it was not the right one, and that I needed a new card. He gave me one free of charge, but it is still doing the exact same thing. Hanging up on people, saying no SIM card. It is very frustrating!!!

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  • 191 Answers

I had the same issue, cleaning the contacts on the sim card did not help. BUT i went and got a new SIM, it did the same thing.. till i wedged some folded up paper into the sim slot on TOP of the sim card forcing it closer to the contacts. So far this is working for me atleast. good luck.

Posted on Aug 03, 2009

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Posted on Jan 02, 2017

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Some cell phones have trouble reading SIM cards that have been used in other phones. (Example: The Samsung Jack may not be able to read a SIM card that has been used in a previous Samsung BlackJack model.) I run in to this problem almost daily with my customers.

Your HTC phone probably has the same problem. To correct it, you'll need to purchase a new SIM card (you can get one on eBay for the least amount of money) and contact your cellular provider. Tell them you have a defective SIM - that you purchased a new SIM card and you need your account switched to the new SIM card.

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