It is now possible to unlock iOS 8.3 iPhone AT&T, Sprint, T-Mobile and Verizon though you can purchase T-Mobile iPhone unlocked to be used for a number of networks worldwide directly from the carrier. Still if you want to access all carriers it is better to order factory unlock by IMEI that is activated through iTunes using the best and the cheapest online LetsUnlockiPhone service. You can easily unlock iPhone 6 iOS 8.3 or any other smartphone model [iPhone 6 Plus, 5c, 5S, 5, 4S] that support the new firmware update. If you haven’t downloaded this upgrade you can use direct 8.3 links and our OTA and iTunes installation guide which is the most recent operating system for ‘fruit’ devices. We have already answered the question whether it is possible to jailbreak iOS 8.3 which was officially released on April 9. Now we would like to clarify how to unlock iOS 8.3 with iTunes since this service is available to all 8.3 users unlike the jailbreaking which is currently impossible. The whole thing is very simple, highly trusted and permanent. To put it in other words, you can order IMEI iOS 8.3 unlock for Verizon iPhone or other carrier [AT&T, Vodafone, Orange, EE etc.] and become permanently SIM free. Once your IMEI number is listed as ‘unlocked’ in carrier’s databases iTunes will connect to Apple servers, see that you are unlocked and confirm that you are unlocked. You can connect to all mobile operators afterwards, update your firmware version, restore and do anything you are usually doing with your smartphone without being afraid to become locked one day. This will not happen. How can you order such permanent unlock service for 8.3 update? There are companies that can make you SIM free at a charge. Your original carrier can also make this happen, for free or at a fee, depending on your model and contract / off contract status. Whatever method you choose you have to have a clean IMEI number. Just run iPhone blacklist check service and you will know if you are blocked, blacklisted, barred. Run iPhone network checker and you will know the name of carrier you are locked to, your handset status [make sure it is not reported as lost or stolen]. After you are sure you are whitelisted and everything is ok with your handset, you can select the package that mentions your carrier, phone model and contract / off contract state. Provide your IMEI [get it by entering this combo: *#06#], email and wait until your operator or a third-party trusted company performs the SIM unlock for you. Once you get the confirmation about the new status, connect to iTunes and it will automatically activate it. Everything is fast and easy, so you shouldn’t have any problems with 8.3 unlocking.