Android users have already experienced the goodies from the new Xperia Z3, thanks to the developer community which shared the features via the system dump of the handset. However, thanks to our amazing developers, this thing is not a problem anymore. Developers have the knowledge to port apps from a newer phone to an older phone.
This is a port which has been released by senior XDA member Mahadeveloper. The port has been successfully tested on a number of Android devices including Nexus 5, Galaxy S4 and Galaxy Note 2.
Install all of these as normal apps (No root needed) or if you want to push into /system/app/.