Unlocked Cell Phones Fm Radio. But if you a non-US citizen who wants to unlock your Sprint iPhone so you can use it in your home country, try Chronic.Play in your settings, as I mentioned to perform different actions you just need a little more time and patience because I sorry I can not be more specific at the moment but can give you more help if needed. Instructions for entering activation code: Turn your iPhone want 4S with foreign SIM phone for you Sim Network Unlock Pin or Enter Activation Code Enter Your Lock Code Your iPhone 4S phone is now entsperrt.Es was given to me but that what CHOSENLEGACY said; Sprint is not straight forward with its information locking devices for use in other networks outside of the international. ML codes were used in the flash software on the phone to remove the SIM card due to the newer devices, it a worthless technology or something to do that, the user only uses 3g. More importantly, it replaced a previous decision by the Library of Congress, which interpreted the unlocking of mobile phones as an infringement of copyright (a decision that actually won the Open of Phones in Popularity). It is important to note that not all devices can be unlocked, often due to the manufacturer device design, and even for unlockable devices, all device features can not be unlocked. Here is the catch. So if your device is paid, which can be achieved in many ways: Upgrade to a new phone (even if you only had the old one for a month) as long as it an upgrade. It was not true for Sprint iPhones, but if you ask a Sprint employee, they will tell you that an unlocked Iphone 4 or 5 is only available for international unlocking and it will not work in the United States. I should say she did not say International Unlock she said General Unlock including all the other 4 reps I spoke to and she told me clearly when I unlocked my iPhone it could work on Att and someone else uses on us but she said that only The problem would be that LTE won can not connect to the iPhone just 3G or 4G.