My iphone 4s says my sim kard isn't valid

my iphone 4s says my sim kard isn't valid

Isabelle1805 wrote:
I buy this iphone from a girl.
Ok, that still doesn't mean anything or provide any useful information to help with your issue.
I'm going to take a guess, you bought a second hand iphone from a girl and now you want to use it with your phone carrier, but it says invalid sim.
sounds like you bought a phone that is still locked to a different phone carrier, contact that girl and find out.

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    goo.gl/QClXyj
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    <Edited by Host>

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