The model number is masked in the “About phone” settings, but it highlights that the Xperia Z4 will run the Qualcomm MSM8994 Snapdragon 810 chipset and Android 5.0.2 Lollipop. The screenshot also suggests that Sony will use a kernel version beginning with “3.10”, whilst the software build number will start with “28”.
The settings menu shows that this is the Dual SIM model, with the screenshots giving a brief glimpse as to what Lollipop may looking like in the upcoming update for older handsets.
Via Digi-wo.