If you are proud owner of Xperia Z1, Z Ultra and Z1 Compact you will be more than happy to know Sony have updated its Android version to KitKat 4.4.2 for all these devices.
This will bring many improvements in terms of UI optimization and performance tweaks. The update for Xperia Z1 comes with some ergonomic changes, new Xperia themes, and more. The new KitKat update also has a double tap to wake up the screen, a built-in answering machine and a couple of new camera features as well.
To make sure you don’t miss all the updates that have been added, Sony has released 2 videos highlighting the new UI features. You can watch those videos here and here.