It looks like Sony's new full HD flagship smartphone is selling well. The Xperia Z Android smartphone sold out in just one day in France and in Japan DoCoMo sold over 140,000 units in the first week after its release.
PlayStation App for Android brings second screen to PlayStation 4, not for gaming though
Sony has indeed announced a companion PlayStation App for Android and iOS that will be available to PlayStation 4 buyers, although you won't be able to use phones and tablets as actual controllers yet.
PlayStation 4 to be controlled by (Android?) smartphone, tablet; release date set for November