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Related Article: Learn which size SIM card your iPhone or iPad uses

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burrito baby Author

Level 1

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SIM failure on iphone 4s

How do I fix error message "SIM failure" on iphone 4s?

iPhone 4S

Posted on Jun 3, 2013 9:44 AM

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1 reply

Level 6

15,305 points

Jun 3, 2013 9:56 AM in response to burrito baby

Start here

http://support.apple.com/kb/TS4148

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SIM failure on iphone 4s

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