Sony's XZ Premium flagship has just about everything you could ask for from a top-end phone. A 4K display, insanely powerful processor and a unique super-slow motion camera all make this handset great. And yet I'm not completely smitten.

The Sony Xperia XZ Premium's awesome screen; supercharged processor and unique slow-motion video mode rightly earn this phone its premium name

This is the same design premium Sony phones have used for years and it's starting to feel old and boring; The limited camera interface makes the phone feel crude; The fingerprint reader is turned off in the US

With the heating issues that plagued its predecessors out of the way, Sony's newest flagship is a legitimate competitor to the Samsung Galaxy S8 and Galaxy S8+. The Sony Xperia XZ Premium is just as powerful, has an excellent display, is waterproof, has decent battery life, and offers a very good...

Sony Xperia XZ Premium is a top notch phone, there's no doubt. The camera ticks the right boxes, the overall UI and performance is not bad, though it could be smoother. As far as premium goes, this phone covers it all, offering the complete package.

Fantastic phone! Screen is out of this world! Camera is perfect! Operation is faster than most! In my view much better than Samsung A8. An absolute joy to use!

The Sony Xperia XZ Premium is a good phone. It's powerful, well-made and has a high-end, impressive look that is often the kernel inside our desire to have a £650 phone when a £200 one would probably do the job just as well.

Bold look; smarter camera than last year; slow-motion video capture can be fun

Photo quality; 4K screen is a limited real-world benefit; bulkier than its Android rivals; unique features wanes rather quickly

The Sony Xperia XZ Premium goes all in with features that the company dabbled in with recent offerings, making it a worthy consideration for anyone that is willing to overlook the lack of a fingerprint reader and basically non-existent carrier availability in the States.

Sleek design Powerful 4K display Top-notch performance Great audio experience Lightweight software is snappy and smooth Powerful Auto camera Dedicated camera button

Design is all too familiar No fingerprint reader in western units Software ROM cripples Android Pay Battery life average overall

Things get tricky when you start reviewing a flagship smartphone. Testing the limits of cutting edge technology is not as easy as it may seem, and when you're creating that offbeat technology, all of that difficulty multiplies a hundred times.

Eye catching form factor; Excellent Performance; Vibrant 4K HDR Display; Smooth User interface; Good battery life; Fantastic slow motion video

Shiny surface may attain unneeded attention; Terrible low light camera performance; Requires minute software improvements; Oversaturated display; No infrared Blaster

Love this phone. Everything works smoothly. Interface for Spotify is awesome. Battery life is fantastic. I feel that I'm a pretty heavy user (music for most of the day, Youtube, Netflix, and occasional games)and my battery lasts well over 24 hours, and this is without using stamina mode!

A few months back, Sony showcased the Xperia XZs which tackles the current flagships with its renowned camera. This year, Sony's latest smartphone Xperia XZ Premium is loaded with features even more than the Xperia XZs.

What defines a premium product? To my mind, it's the added benefit or advantage of something that you wouldn't be able to obtain at a lower price. An example might be the $4,000 Focal Utopia headphones with beryllium drivers, whose sound is hard to rival and unobtainable without that extremely rigid...

Bright; pixel-dense display; Snappy performance; Good battery life

Underwhelming camera; Unergonomic design; Display bezels are huge by 2017 standards