NotebookCheck | Florian Wimmer

HTC's U Ultra is a giant: With a 5.7-inch panel plus secondary screen, it has quite a bit of screen surface area. An innovative headset and a personal assistant are also part of the bundle. It is too bad that HTC messes up in its key skill: The speakers are only mediocre.

Australian PC World | Nick Ross

HTC's flagship phone brings some interesting features to the top of the market including great looks and 24-bit audio. But there's better value elsewhere.

Gadgets Now | Avani Bagga

...the diverse array of features make the package worth it. We loved the software tweaks, the design and of course, the display(s). The camera, performance and fingerprint sensor are all good as well.To sum it up, we'll say that we were very happy with the phone's performance and the flagship device didn't leave us disappointed in any way. We'd recommend it, despite the high price tag.

The Economic Times | Hitesh Raj Bhagat

Ultimately, while the phone is great, they need to drop the price to entice more buyers.

Android Central | Andrew Martonik

The U Ultra has a great screen, amazing build quality and stunning design. You get just about every spec inside you'd expect, and the day-to-day performance as a result is fantastic with a super-smooth software experience.

Pocket-lint | Chris Hall

It's a big screen phone from HTC that part embodies some of the company's previous traits (it's a Sense experience that's well-built), while introducing a new, unique finish. It's certainly striking to look a

NDTV Gadgets | Jamshed Avari

The U Ultra is meant for buyers who don't have any budget limitations and don't care about detailed specifications. It's a statement piece, and as such, it succeeds. It does score well for its design, display, and camera, but subjectively, you don't get a lot of the finesse that you do with other existing phones. With its awkward second screen, overall bulk and ordinary battery life, and with a marquee feature like Sense Companion up in the air, it's very hard to recommend this phone at this price.

Phone Scoop | Eric M. Zeman

It's pretty easy to say the U Ultra is HTC's finest phone... The U Ultra has a solid screen, excellent voice and data performance, and solid battery life... Who should buy the HTC U Ultra? People with cash to spare and who prefer high design over practicality. It's a fine, fine phone, but perhaps not fine enough.

pocketnow | Jamie Rivera

On its own, the HTC U Ultra is a gorgeous device, with one of the best screens I've used, and an awesome camera combo. Sadly the problem is that it doesn't live on its own. You don't have water resistance, its design is larger than the newest competitors, and all the while dropping essentials like a headphone jack.

MobileTechTalk | Craig Bradshaw

If HTC were a Premier League football team, they'd be Arsenal currently. They look great, have some stand out features, but flatter to deceive when it comes to the crunch, and seemingly have owners who are happy enough sitting at the bottom of the top tier.

Neowin | Rich Woods

While I did enjoy the device as a standalone product, I fail to see where it fits into the greater scheme of things. I honestly just like the HTC 10 better. But hey, if you really want that secondary display, go for it.

Android Headlines | Nick Sutrich

HTC's latest phone exhibits all the makings of a fantastic flagship. Unfortunately for HTC, its competitors have outpaced it in innovation and features, and its shortcomings make it difficult to recommend in certain markets. A gorgeous new benchmark from HTC with some unfortunate setbacks.

Engadget | Chris Velazco

I can't stress this enough: The HTC U Ultra is not a bad device. It's beautiful, well-built and plays home to a lot of good ideas... It's just unfortunate that the good ideas here have been obscured by bad design decisions and what seems to be a terminal a lack of focus.

ZDNet | Matthew Miller

The HTC U Ultra is probably the best looking phone I have ever experienced and the glossy blue back is stunning... Audio has been great on the U Ultra through the dual speakers and included USB Type C headset... The camera is fine, but doesn't impress me.

Tom's Guide | Sam Rutherford

HTC's U Ultra is a gorgeous (and expensive) flagship phone, but with HTC's Sense Companion delayed until late April, its most important feature may come too late.

TechRadar | James Peckham

HTC's latest phablet is has an attractive look and a lot of great ideas - including a second screen - but a lot is recycled tech here and it's hard to recommend when the HTC 10 offers a lot of the same at a lower price.

Recombu | Alex Todd

You can expect great performance with plenty of storage, it's an audiovisual treat for both capturing and enjoying media, and has some standout design elements, but despite all of this, we're left feeling like it's missing that special something.

CNET UK | Dan Grazlano

The U Ultra is missing too many flagship features to justify its high price... The U Ultra is a fully capable device.... It's simply too big to hold comfortably and too expensive for what it offers. When you pay a premium price, you expect premium features. This isn't the case with the U Ultra.

The Mobile Indian | Rohan Pal

... it comes with a good display, but flawed by the reflective screen, a good camera but flawed by some oversaturation, a good performer but flawed by overheating and last but not the least, a good user interface flawed by Sense Companion app.

The Verge | Dan Seifert

At best, it feels like a phone that HTC needed to put out because it had been so long since its last phone was released, but not the real flagship that's still coming down the road. At its worst, the U Ultra is a mess of bad ideas and even worse execution...

S21

The HTC U Ultra is a premium phone with a "liquid surface" construction and a second display that shows top contacts and shortcuts. The phone is expensive when you consider the competition. If only it had been priced more modestly.

PC Mag | Ajay Kumar

The HTC U Ultra is an eye-catching unlocked phablet with powerful hardware and some unique features, but it's expensive and feels a bit half-baked... It doesn't ship with a headphone adapter, HTC's Sense Companion isn't ready yet, and camera performance clearly needs some fine-tuning.

The Telegraph | James Titcomb

HTC has pushed the envelope here, which is reassuring to see. Most of the fundamentals are done well and the camera is perfectly adequate. The second screen especially is interesting, even if it could be better applied, but the lack of a headphone jack is irritating. HTC's Sense Companion - its AI assistant and a big selling point of the phones - isn't available yet, and it's strange to launch the phone without it.

Digital Trends | Kyle Wiggers

The U Ultra was HTC's chance to burst out of the gate with something spectacular, and to the company's credit, it mounted a valiant effort.

TechSpot | Tim Schiesser

There are too many problems with the HTC U Ultra for me to recommend it. The U Ultra would need another price cut for me to even consider recommending it, and that's likely not going to happen.

PCWorld | Michael Simon

HTC's first flagship since the 10 is too big, too crippled, and too expensive to be considered as a phone worth buying. A big beauty that's plagued with problems. An ultra waste of your money.