Why is my sim not working

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Android Central Question

I upgraded my samsung galaxy s5 yesterday with kie3 and after the upgrade i did factory reset everything is working perfectly but my sim signal is not showing and i can't make call the has been detected but no signal
 

Rukbat

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Feb 12, 2012
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Can you bring the phone (with the SIM in it) to your carrier? If you can, let them worry about it. (If they're set up right, they can even reflash the update to make sure that it didn't get corrupted when you did it.)