The best phone of 2018: 15 top smartphones ranked and rated

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15. Sony Xperia XZ Premium

A 4K screen that actually offers impressive performance

Release date: June 2017 | Weight: 195g | Dimensions: 156 x 77 x 7.9mm | OS: Android 7 | Screen size: 5.5-inch | Resolution: 3840 x 2160 | CPU: Snapdragon 835 | RAM: 4GB | Storage: 64GB | Battery: 3,230mAh | Rear camera: 19MP | Front camera: 13MP

Beautiful HDR screen
Impressive power
Chunky bezels
Lack of 4K content

We thought the days of the 4K phone were over – but Sony's back, and has reinvigorated the technology by cramming in HDR compatibility, which really makes videos look stunning.

Screen: This is the only phone out there with a full-blown 4K screen, and it also comes with HDR tech. The amount of HDR content for mobiles is increasing all the time, but even without that this screen makes even the most mundane image look brighter and more colourful, and the rest of the phone is impressively powerful.

Battery life: The XZ Premium does pretty well given how many pixels it's driving on that 4K screen. It'll last you a full day with a little more to spare on moderate use, thanks to some dynamic screen technology that actively alters how much is being used.

Camera: The camera is on the XZ Premium is capable of taking exceptional pictures, the slow motion capabilities are insanely great in the right light, and the raw grunt of the handset is up there with the very best. If you're a Sony fan, you'll love this phone.

Mini verdict: The square corners won't appeal to everyone but if you want to watch 4K video and review your photos in as much detail as possible, this is a great phone.

Read more: Sony Xperia XZ Premium