At 146 x 72 x 6.9 mm and 144g, the Z4 is the exact same height and width as the Z3, but 0.4mm thinner and 8 grams lighter. That svelter profile seems to have been achieved at the expense of the battery, which is still non-removable but has dropped its capacity from 3100 to 2930mAh.
Under the almost-unchanged hood, you'll find a set of almost-unchanged specs from the Xperia Z3. The display remains a 5.2" 1080 x 1920 pixels Triluminos panel, there are still 3GBs of RAM, the back camera keeps its 20.7 MP resolution with the 1/2.3" sensor capable of shooting 4K video, and there's the same smorgasbord of connectivity options (Wi-Fi a/b/g/n/
ac, Bluetooth 4.1, NFC, MHL, HSDPA, et al.) with an enhanced LTE Cat.6 radio.
The more significant differences affect the processor, front camera, and onboard storage. For better or mostly worse,
Qualcomm's now infamous 64-bit octacore
Snapdragon 810 is powering the Xperia Z4. The front camera has also jumped up from 2.2MP to 5MP with digital stabilization and a wide-angle for all 'dem selfiez aficionados. And like all of 2015's flagships, the Z4 has upgraded its default storage option to 32GB.
