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S21 is a technology website bringing together hundreds of independent expert reviews, over 100,000 user reviews, plus articles, 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:

Sony Xperia Z3 Plus review
We've been huge fans of Sony's Xperia Z series, and the Z3+ should have been another slam dunk phone. But massive overheating problems make this one to avoid. It's a shame, because in every other way, this is the best Sony smartphone ever.
 Sony KDL-50W805C review
The Sony KDL-50W805C is a 50-inch TV with superb picture quality that costs under 1000. It's not UHD (4K), but that doesn't worry us in the least when the image quality is this compelling. Low input lag makes this a top choice for gamers too. Only the slow, piecemeal roll-out of its Android TV system gives us any concern about recommending this television.
LG 40LF630V review
The LG 40LF630V is a value-for-money TV with excellent WebOS Smart TV functions and plenty of connectivity options. However, the IPS display offers muddy viewing that doesn't impress. We'd recommend it only if the price falls below 400, and even then, only with reservations.
 Samsung Galaxy J1 review
The Samsung Galaxy J1 was originally released in India early in 2015 and is now available in the UK. It's a cheap, entry-level smartphone, but it cuts too many corners with its dual-core processor and tiny memory. We think it would prove to be a frustrating experience, and we'd recommend you avoid this one.
LG G4c review
The LG G4c is a cheaper, more compact version of LG's outstandingly good flagship G4 smartphone. Whilst it shares the stylish looks of the G4, the G4c misses out on many of its best features. However, for a phone costing around 200, it's still excellent value, and is a good mid-range choice.
 Huawei P8 review
The Huawei P8 is a flagship smartphone that costs less than you'd expect. We love its ultrathin metal design, its superb screen, its 8-core processor, top camera performance and decent battery life. Its only fault is the Huawei brand, so unless you're a brand snob, you'll find it to be a superb alternative!
Sony BDP-S3500 review
The Sony BDP-S3500 is an excellent Blu-Ray player with Smart TV and built-in Wi-Fi. This enables you to wirelessly access catch-up TV, plus Sony's library of movies, music and games, and also to wirelessly stream videos, music and photos from your home network or smartphone. It just misses out on 3D playback and UHD (4K) upscaling.
 Sony Xperia M4 Aqua review
The Sony M4 Aqua is a cut-price version of the company's flagship Z3 smartphone. Sharing a very similar ultraslim and waterproof design, the M4 Aqua has a large HD display, an 8-core processor and runs Android Lollipop. It could have been a great phone, but the limited onboard memory and poor battery life spoil the otherwise excellent experience.
Samsung Galaxy Tab A 9.7 review
If you're looking for an averagely-sized, averagely-priced tablet with average specs, the Galaxy Tab A is for you. Its best features are its slimline, ergonomic design and smart looks; the main negative is the low screen resolution. Overall, it's a good basic tablet.
 LG G4 review
The LG G4 is even better than the G3, with a unique leather finish giving it a distinctive premium look & feel. It's a large phone with a huge 5.5 inch screen, yet it doesn't feel too big, thanks to its light weight and tapered edge design. The screen is a super-bright Quad HD display and is one of the best available. Add in a superb camera, hexa-core processor and a large battery, and you have a superb all-round smartphone.

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