[3] Unlike the Xperia Z5, the device features a 4K 5.5 in (140 mm) screen with the resolution of 3840×2160 pixels whilst still retaining 2 hours and 30 minutes of battery life.

[5] The Xperia Z5 Premium is preinstalled with Android 5.1 Lollipop with Sony's custom interface and software.

On August 23, 2016, Sony announced that the Xperia Z5 Premium would receive an upgrade to Android 7.0 Nougat.

[7] On February 16, 2017, Android 7.0 Nougat has been upgraded for the Sony Xperia Z5 Premium Dual Sim E6883.

On June 28, 2017, it started to roll out the Android 7.1.1 Nougat firmware update.