First smart phone have a 4K UHD display, which means it, has four times greater pixels as a full-HD display. Sony is first manufacture, which will launch advanced features including with 4 K Ultra-HD displays to smart phone. The Sony Xperia Z5 Premium is the 1st Smartphone along with 4K UHD display. It has 800 pixels per inch on screen.
Sony trying to add advanced features in its such as 4K video recording, so that you can watch recorded video at the highest quality on your shiny new display. Also YouTube supports 4K resolution due to that you can upload videos in 4k resolution.
Snapdragon 810 processor is used in the Sony Xperia Z5 Premium. And its battery backup is 3430mAh with quick charging support, with 32GB internal storage and external storage up to 200GB, which offers extra room for 4K videos and movies, which offers extra memory for 4K videos.
Some added new specification, which will increase quality of phone including AAC or Spotify tracks with great-Res audio quality, audio support as well as DSEE HXTM and you can share data three times more efficiently than legacy codec over Bluetooth, enabling efficient wireless audio streaming.