Out of the box: the device comes with the manufacturer's custom skin (Funtouch UI 4.x) layered on top of Google's 8.1 release (Oreo). For many regional SKUs the vendor pushed an OTA package to move the build to 9.0 (Pie); users expecting releases past 9.0 should treat them as unlikely from official channels. How to confirm your exact build: open Settings → About phone → Software information and check OS version, Build number and Security patch level. If the OS line shows a numeric value starti...