Basic Information Brand : Bluboo Model : S3 ReleaseDate : 2018/05/9 Material : PC + Metal. Glass; touch screen UnlockPhones : Yes OperationSystem : Android7.1 you can upgrade your phone OS via FOTA to Android 8.1 later. CPU : MTK6750T Octa-core 1.5GHZ GPU : ARM Mali T860 MP2@650MHz Product Size : 15.78cm * 7.55cm * 4.5cm Product Weight : 282.2 gram Language : Indonesian,English, etc.