Best phone 2017: the 10 top smartphones we've tested

6. Sony Xperia XZ Premium

A 4K screen that actually offers impressive performance

Weight: 195g | Dimensions: 156 x 77 x 7.9 mm | OS: Android Nougat | Screen size: 5.5-inch | Resolution: 3840 x 2160 | CPU: Snapdragon 835 | RAM: 4GB | Storage: 64GB | Battery: 3230mAh | 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 reinvigorated the technology by cramming in HDR compatibility... which really makes videos stunning.

Sure, there's not masses of HDR content out there, but the tech makes even the most mundane image look brighter and more colourful, and the rest of the phone is impressively powerful.

The camera is capable of 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.

Read the full review: Sony Xperia XZ Premium

  • What's next? We're not sure what Sony is cooking up next, but chances are we'll see a sequel to the Xperia XZ at IFA this year - stay tuned for more information on that in the coming months.

Also consider: The easiest comparison here is to the Samsung Galaxy S8 Plus - they're both impressive phablets with excellent HDR screens, so it really depends which brand you're most attracted to.