When you buy a new iPhone, there is a chance that it will be locked to a carrier, although this is not a big issue, but if you want to use the phone with any other carrier in the world, you can unlock your phone. Although this method is not official, it works just like the official carrier release: it permanent, works with all models and operating system versions, stays in place, even after a recovery and does not require jailbreak or other hack. Tax due to sale. By purchasing, activating or using the phone and our service, you agree to the terms of the Cricket Wireless. For inactive devices, customers must contact Sprint Customer Support to request that their DSU enabled device be unlocked to take steps to perform an over-the-air update to ensure that unlocking of programming is enabled on the device was forwarded. But in August 2014, US President Barack Obama signed an unblocking ballot and wireless competition law that allows someone to unlock their cell phones. This is what I read and this is what my experience tells, based on more than 0 IMEI checks that I done Verizon iPhone USA (I thinking about iPhone 5 and above). The phone itself is technically functional in other GSM networks but you have won you have 4G LTE and it may take some effort to make APN and network operator settings properly, allowing data and MMS function. With Straight Talk customers can make or a T-Mobile GSM phone or an unlocked GSM phone to Straight Talk. NET add by purchasing a SIM card and call time from Company. Use iPhone to list, the company you need to pay, the IMEI code (IMEI) on the phone that is unique to your iPhone when it was ATT, which has unlocked the phone and the phone is unlocked at your exit, the Apple Store should also help you because it is an official unlock. New Iphone 6 Plus Unlocked For Sale.