Is "double tap to wake screen" available for Z2? This post [*1] says it's included in 4.4. My Z2 is with 4.4.2, but I can't find the setting to turn it on.
*1: fonearena.com/blog/97620/hands-on-with-sonys-android-4-4-ui-on-a-xperia-z2-double-tap-to-wake-gestures-and-more.html
*1: fonearena.com/blog/97620/hands-on-with-sonys-android-4-4-ui-on-a-xperia-z2-double-tap-to-wake-gestures-and-more.html