All Xperia Z5 model shares some of the specs and design element including, Snapdragon 810 64-bit Octa-core processor, Adreno 430 GPU, 32GB internal storage, microSD card (up to 200GB), 23MP shooter with 5x Clear Image Zoom and 5MP front-facing camera, fingerprint sensor, and Waterproof and dust tight (IP65 and IP68).
However, the Xperia Z5 Premium comes with 5.5-inch 4K (3840x2160) display and 3GB RAM, while the Xperia Z5 comes with 5.2-inch 1080p display and 3GB RAM. Last but not least, the Xperia Z5 Compact support 4.6-inch 720p display and 2GB RAM.
The Xperia Z5 Premium is now available to pre-order for £629/799€, while the Xperia Z5 will go for £549/699€, and the Xperia Z5 Compact will be released for £429/599€.