Question about Samsung SGH-C300 Cellular Phone

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Invalid sim card

Let me introduce myself, Rauf from India. Sir I have been gifted samsung C-300 which was bought in UK. The problem is whenever I insert any sim in my new mobile it flashs on screen invalid sim card but the same sim cards i am already using in my preveious mobiles.kindly help me out with this problem.
Thank you
Regards from Rauf.

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  • danie112 Jan 24, 2009

    I want my phone to activate all sim card networks.

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Kindly change the frequency of the mobile.

Posted on Mar 21, 2009

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Ok slam alikum rauf its waqas from pakistan.i have read your problem .i wana ask you have you open the country code of this mobile if not then open it from mobiles software service .if already open then there is another fault in your mobile inside it (sim drivers inside the mobile is faulty) you should local repair it ok and tell me again thanx

Posted on May 12, 2010

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Posted on Jan 02, 2017

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