Mobile Phone I have one chinese mobile Sigmatel s3+ ..my problem is that a new sim card i bought is not working..it shows "insert sim"...but the other sim in the mobile working correctly. I put that new sim to another mobile phone and it was working. Only the problem is The new Sim card is not working in this mobile... I tried my friend's sim card in my mobile it works neatly. What problem is this
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Answers & Comments
Replace the SIM card.