Fixing “Only compatible SIM cards from a supported carrier”

If your iPhone cannot continue activation and stuck in this step: It means that your iPhone is asking for a SIM card from its original carrier in order to continue the activation. It
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Unlock AT&T iPhone 4S with Activation Bug

If you are really depend on unlocked iPhone 4S, I suggest you to buy factory unlocked iPhone 4S rather than finding or waiting for iPhone 4S unlock by ultrasn0w or gevey sim. Join
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