Hello. Is there are way to unlock iOS 7.1.2 iPhone 4 carrier to use any SIM Card country free not buying any non-Sim card which unlocker whit IMEI or factori? The 3G-3GS is unlocked carrier by UltrasnOw but iPhone 4 iOS 7.1.2 how to unlock carrier for free? Pleas hellp me, i am in new country...