How to fix 'No Service' response on sim card insertion in iphone 4???

How to fix 'No Service' response on sim card insertion in iphone 4???

Posted May 17, 2014 at 8:25pm by mws · 3518 views
I have a iPhone 4 (IMEI : 013668004115381) running ios version 7.1.1 (11D201) and Modern firmware 04.12.09. When i insert a valid sim card it shows 'No Service'. Moreover, it shows Network and Carrier as 'Not Available'. Do i need to jailbreak my iPhone?? Please help me to fix this issue.....


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