We find out whether the Japanese firm has resolved the Xperia Z3+ Snapdragon 810 battery drain problems. SONY REVEALED its latest smartphone line-up at the IFA conference in Berlin last month, comprising three new handsets: the Xperia Z5, the smaller and slightly less powerful Xperia Z5 Compact and the Xperia Z5 Premium, a bigger and beefier model that brings 4K resolution to a smartphone for the first time.

As the successor to the Xperia Z3+ the Xperia Z5 possesses many of the same features, such as an IP65/IP68 dust-tight, waterproof design with cap-less USB ports, plus a number of updates, including Sony's next-generation camera, the larger 1/2.3 Exmor RSTM for mobile with a 23MP sensor and F2.0 G Lens.