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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:

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!
 BT Mobile review
BT Mobile is a virtual network making use of EE's network to provide fast 4G access, plus free, unlimited access to BT's Wi-Fi hotspots in more than 5 million locations around the country. BT Broadband customers receive a monthly discount on their bill.
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.
LG BP250 review
If you want a Blu-Ray player that plays disks and ... well, nothing else really, then the LG BP250 is a good, cheap choice. It has no 3D capability, but will upscale DVDs to Full 1080p HD. For the price, you really can't go wrong.
 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.
 Samsung UE48JU7000 review
The UE48JU7000 is the best Samsung TV we've reviewed in 2015. Picture quality is close to perfection, and audio quality is above average too. The design is subtle and under-stated, and it's hard to find anything wrong, other than the relatively high price. To get better than this you'd have to spend silly amounts of money.
Panasonic TX-40CS620B review
If you're looking for a 40-inch TV that doesn't cost the earth, you'd do well to consider the Panasonic Viera TX-40CS620B. Stripping away the non-essentials of 3D and UHD, the CS620B concentrates on the basics and does them very well indeed. For around 400 you'll get a very fine TV with excellent picture quality, Smart TV and connectivity. Highly recommended!
 Panasonic TX-50CX700B review
The Panasonic Viera TX-50CX700B is an affordable 50-inch UHD TV. Not only does it have a stunning design, but it also delivers exceptionally good picture quality with Panasonic's "Super Bright" technology giving bright, vivid images with deep blacks and plenty of shadow detail. Smart TV and connectivity options are excellent too.

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