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S21 is a technology website bringing together hundreds of independent expert reviews of smartphones, tablets, TVs and kitchen appliances, plus over 100,000 user reviews, and buying guides and links to the best online deals. Looks familiar? We used to be Mobile Phones UK - reviewing mobile technology since 2001.
Latest reviews and articles:
The EX750B is the top-end model in Panasonic's 2017 range of LED TVs and it's a UHD HDR model. The 50-inch screen is a very good size for family viewing, and this model is a solid all-rounder, with excellent picture quality, good Smart TV and connectivity, and a neat and flexible design.
The Galaxy Tab S3 is Samsung's best ever tablet, with a premium build, lightning-fast processor, and superb 10-inch HDR-ready screen. Its quad speakers and optional keyboard are also welcome. But the price is crazy, and it's the first Android tablet we've seen that costs even more than the equivalent iPad.
The Sony 55XE9005 might just be the best TV you can buy for the price in 2017. The direct backlit screen with local dimming delivers outstanding picture quality, whether showing HDR or normal video content. And with a smart, premium design, the benefits of Android TV, and a decent audio system, it's got the lot.
The Samsung QE55Q7F uses QLED quantum dot technology to produce bright images with rich colours. It's one of the most capable TVs on the market, and arguably the best-looking. However, although the Q7F is the cheapest QLED TV, it's still very much over-priced compared with rivals.
The Samsung Galaxy S8+ is a super-sized version of the S8, with an absolutely incredible screen, and electrifying capabilities to match. It's the most powerful mobile device you can get your hands on, but the price is sky high too.
The HTC U Ultra is a premium phone with a "liquid surface" construction and a second display that shows top contacts and shortcuts. It has a good screen, plenty of memory, and a fast processor, but battery life isn't so hot, and there's no 3.5mm audio jack. The phone is expensive when you consider the competition.
The P10 Plus is Huawei's best phone ever, and a rival for the iPhone 7+ and Galaxy S8. It's superfast, ultraslim, has a top camera, massive amounts of memory, and good battery life. But the Chinese brand has overreached when it comes to pricing, and misses out on a 5-star review for that reason.
The Motorola G5 Plus is one of the best mid-range phones of 2017. Good looks are combined with a superfast octa-core processor, 32GB of memory, a good camera and decent battery life. Top value for money!
The Samsung Galaxy S8 takes Samsung's infinity screen concept into new territory, with an enormous 5.8 inch quad-HD dual-curved display packed into a compact handset. Brimming with market-leading features, the Galaxy S8 is the best-looking and arguably the best-equipped phone on the market in 2017, but it has a price to match.