HT1414 I restored my I phone 4 using Itunes, after that I can't access the icon any more I only got a message that says " ( Sim not Valid.) Only compatible SIM cards from supported carrier may be used to activate iphone.

I restored my I phone 4 using Itunes, after that I can't access the icon any more I only got a message that says " ( Sim not Valid.) Only compatible SIM cards from supported carrier may be used to activate iphone. I need some proffesional help. Thanks

"We're Sorry, Activation Server Temporarily Unavailable, contact Customer Care, Sim not vaild?"
99.9% of the time, the cause of this issue is the fact the phone was jailbroken/hacked to unlock it for use on networks other than the network the phone was originally locked to. Apple maintains a database of officially unlocked iPhones, and when Apple's servers detect phones such as yours, activation stops & you get the message you got.
So, either get a sim card from the carrier your phone was originally locked to, or get it officially unlocked, if you want to activate it. Because it appears that it was not officially unlocked.

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