Sony Xperia Z2

The Sony Xperia Z2 is an Android-based smartphone unveiled, manufactured, and marketed by Sony and was released in April 2014. Under the codename “Sirius”, Xperia Z2 serves as the successor to the Sony Xperia Z1. Like its predecessor, the Xperia Z2 is water and dustproof, with an IP rating of IP55 and IP58. The phone features an IPS LED display, a Snapdragon 801 processor and the ability to record 4K videos. The Xperia Z2 also allows removable microSD storage up to 128 GB.

The Xperia Z2 was unveiled alongside the Sony Xperia Z2 Tablet and the Sony Xperia M2 during the 2014 Mobile World Congress in Barcelona, Spain, on February 24, 2014, and was first released in Taiwan on March 24, 2014, in Singapore on April 5, 2014, and entered more markets between April and May 2014. In the United States, the Xperia Z2 was released unlocked through the Sony Store on July 21, 2014.

Many reviewers praised the phone's screen, camera and waterproof design, but criticized its size and camera software issues that cause the device to overheat when recording 4K video for extended periods. There was at least one reported case of a Z2 exploding due to overheating in the uk, which resulted in legal action being taken against Sony. Sony denied any responsibility.

Similar to other devices under the Sony Xperia Z series, the Xperia Z2 has an "Omni-Balance", according to Sony, which is focused on creating balance and symmetry in all directions. The phone comes with the same aluminium frame as its predecessor. It also features tempered glass on the front and back, with an aluminium power button placed on the right-hand side of the device.

The Sony Xperia Z2 features a 5.2-inch BRAVIA IPS LCD Triluminos display with a resolution of 1080 by 1920 pixels (Full HD) with a pixel density of 424 ppi. Additionally, display features such as Live Color LED technology reproduces richer colours and more uniform backlighting as compared to the Sony Xperia Z1. It has a large 1/2.3" 20.7 megapixel camera with Sony's in-house G lens with Sony BIONZ for mobile image processor and Exmor RS for mobile image sensor. The camera is capable of HDR and 4K video recording. It also supports 4K video output via MHL 3.0. It also features a front-facing camera of 2.2 megapixels. The phone is available in three different colors, black, purple, and white.

The device is equipped with multicolour LED-backlit stereophonic speakers.

On the inside, the Xperia Z2 features a slightly tweaked Snapdragon 800 processor (known as Snapdragon 801) clocked at 2.3 GHz sealed with a high capacity 3200 mAh battery, 3 GB of RAM with 16 GB (11.57 GB user accessible, as shown on the device) internal storage and has microSD, microSDHC, and microSDXC support up to 128 GB (note that SD card can be used for app storage under android Lollipop v5.0.2 and later). The Xperia Z2 is lighter and also thinner than its predecessor, weighing at 163 g and measuring 146.8 × 73.3 × 8.2 mm. For connectivity, the phone supports NFC, Bluetooth 4.0, DLNA and FM radio. It also supports –DUALSHOCK 4. The ability to connect an external USB device is a feature otherwise known as USB OTG which the Xperia Z2 also supports. Digital noise cancellation technology is also built into the phone which works by using the headsets included with the phone.

The Xperia Z2 originally ran the Android 4.4.2 “KitKat” operating system with Sony's custom launcher and some applications additions, such as Sony's media applications including Walkman (currently updated to Music), Album and Videos. With NFC on the Xperia Z2, it allows 'screen mirroring' — which mirrors what is on the smartphone screen to compatible TVs — and play music over-the-air on NFC-enabled speakers. Screen recording (Screencasting) was implemented in it years ahead of stock Android, and accessible from the power button menu.