Tag Archives: Fix SIM not supported message

Fix SIM not supported in iPhone 3G and 3GS after iOS 4.2.1 firmware upgrade

If we upgrade a carrier unlocked iPhone 3G or 3G S to iOS 4.2.1 firmware or any other version it will lose its activation and become unusable. Those people who bought unlocked iPhone models will get into trouble if they […]……..

Posted in mobile | Tagged , , , , , , | 14 Comments