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HT1976: iOS: Understanding cellular data networks

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HT1976 When i insert my sim into the iPhone, i get a message that reads "invalid sim"

498 Views 7 Replies Latest reply: May 7, 2012 4:46 AM by wjosten RSS
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May 7, 2012 2:55 AM

When i insert my sim into the iPhone, i get a message that reads "invalid sim", and the phone shows a "no service" message. what do i need to do to resolve this?

iPhone 4 (8GB), iOS 5.1

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