How does Sony's latest premium smartphone compare to its predecessor?

Sony Xperia Z4 + Z3

Half a year after the Xperia Z3 made its debut, Sony has revealed its successor — the Xperia Z4. Announced initially for the Japanese market, the Sony Xperia Z4 brings a familiar design and feature set in a slimmed-down body, with (mostly) upgraded specs.

If you're wondering how the new Xperia Z4 compares to its predecessor on paper, we've lined both up side by side below. Based on the specs alone, it's not a quantum leap forward for Sony — but we'll have to wait and spend some time with the phone before coming to any firm conclusions.

Category Sony Xperia Z4 Sony Xperia Z3
Dimensions 146mm × 72mm × 6.9mm 146 x 72 x 7.3 mm
Weight 144 grams 152g
Battery capacity 2930mAh 3100mAh
Display 5.2-inch Triluminos Display for Mobile at 1920x1080 5.2-inch Triluminos Display for Mobile at 1920x1080
Memory 32GB / 3GB 16GB / 3GB
SD Memory Slot microSD, microSDHC, microSDXC (maximum 128GB) microSD, microSDHC, microSDXC (maximum 128GB)
Processor Qualcomm Snapdragon 810, 2.0GHz / 1.5GHz Octa-core
64-bit
Qualcomm Snapdragon 801, 2.3GHz
32-bit
External Connectivity Bluetooth® 4.1, microUSB / MHL / headphones, DLNA Bluetooth® 4.0, microUSB / MHL / headphones, DLNA
Main Camera 20.7-megapixel backside-illuminated Exmor RS for mobile 20.7-megapixel backside-illuminated Exmor RS for mobile
Front Camera 5.1-megapixel Exmor R for mobile 2.2-megapixel Exmor R for mobile
OIS No No
Video recording Main camera: Up to 4K
Front camera: Up to 1080p
Main camera: Up to 4K
Front camera: Up to 1080p
Flash Main camera only Main camera only
Waterproof/Dustproof IP65/68 IP65/68 (plastic flap covering charging port)
NFC Yes Yes
Wifi IEEE802.11a / b / g / n (2.4GHz / 5GHz) / ac compliant, MIMO support IEEE802.11a / b / g / n (2.4GHz / 5GHz) / ac compliant
Cellular LTE Cat. 9 LTE Cat. 4
Magnetic charging dock port No Yes
Colors White, Black, Copper, Green White, Black, Copper, Green
Software Android 5.0 Lollipop Android 4.4 KitKat, upgradeable to 5.0 Lollipop

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