Sony made a pretty infographic to explain why Android updates can be so slow

Sony knows you want Android Pie, and it’s working on it. It promises to get it to you by November, so long as you own an Xperia XZ2, XZ2 Premium, XZ2 Compact, Xperia XZ Premium, XZ1, or XZ1 Compact. To tide you over before the update actually reaches your phone and you see all your upgraded friends enjoying it, Sony has published an infographic to teach you about phone updates.It’s not Sony’s fault that updates are slow; blame it on the machine that is a new Android OS rollout