UNLOCK CODE SERVICE FOR: ZTE Sonata 2 Model Z831 and other , if you have any questions please feel free to contact us immediately via Amazon Masagge This its a factory code service for unlock your phone for all GSM CARRIERS WORLDWIDE You do not need to ship your phone to us. BOOST MARKET VALUE: Unlocking your cell phone has multiple benefits: It boosts the re-sale market value and makes your device more attractive to more buyers as your phone is no-longer restricted to be used on a single specific carrier SAVE ON ROAMING CHARGES: After unlocking your device can work on compatible GSM networks worldwide. Eliminates Roaming, when in a different jurisdiction, you would be able to use your unlocked phone on local carrier in the local region UNLOCKING IS LEGAL: Is unlocking my Cellphone Legal? Thanks to changes in the laws in the US in 2014, unlocking a cellphone is now completely legal. The Unlocking Consumer Choice and Wireless Competition Act was made official by President Obama in August 2014. Please check here https://www.congress.gov/bill/113th-congress/senate-bill/517/text PHONE MODEL AND/OR MODEL NUMBER, CARRIER AND COUNTRY, IMEI NUMBER REQUIRED: To process an Factory unlock solution we will require your device INFORATIONS. Please provide us the phone model ((eg: Alcatel Blade V or like Samsung Galaxy Note 5/ S6 Edge etc.)) and/or Model Number (like SM-N920A) Carrier and country the phone is locked to ((eg: ATT USA, T-Mobile USA, Metro PCS USA, etc)) Correct 15-digit IMEI NUMBER (EG: 354327392038263/02)(do not use the one printed on the box) HOW TO SUBMIT INFORMATION : To submit your INFORMATION during checkout or via Amazon message after you have made the order or to contact us directly, do one of the following: Go to the product listing on Amazon.com and click the our seller's name "KRONU". Click Contact the seller under Further Information. Or alternately, go to Your Orders, find your order in the list, and click Contact Seller.KRONU LLC