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I have an Siemens SX 56 that will not read my sim card and its from att the phone keeps on saying locked Sim needs unlock code can u help I have tried everything the IMEI is 350314001078774

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Hi,
As this is the locked SIM problem you need to contact the service provider (ATT) Explain them properly.My friend had this problem and he gave his 20 digit sim card number and they gave 2 codes.One the unlock code and other is the PUK code.So you need to contact the service provider.
Thank You

Posted on Oct 15, 2010

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