Sony kicked off this year unveiling it Xperia Z Android smartphone at the CES show in January, promising it is the most advanced handset it's ever made. The phone was designed to break Samsung's iron-clad grip on the Android ecosystem, with it being believed to currently account for over half of the overall smartphone market by most analyst houses.
Since launching, the Xperia Z had some success in its endeavour to invade Samsung's Galaxy, with analyst Kantar Worldpanel reporting a number of Samsung smartphone users jumping ship to Sony in its latest quarterly mobile market report.
Clearly aware of this, Samsung's responded to the Japanese threat, launching its latest Galaxy S4 flagship. While not a complete overhaul, like the Xperia Z, the S4 features a number of software additions designed to make it more "user focused". These include core features like Eye Scroll and Air Gesture, which are designed to let the phone know when you've finished reading text and scroll down automatically, and interact with the S4 using Minority Report style hand gestures.