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Welcome to S21

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:

Samsung Galaxy A5 (2017) reviewSamsung Galaxy A5 (2017) review
The Samsung Galaxy A5 2017 is a beautiful phone that's been over-priced. On monthly contracts, it will cost around the same as the Galaxy S7, but this is not a flagship phone. Wait for the price to fall to around 20/month, and you'll get a stunning phone with a sharp screen, fast processor, and plenty of memory.
4 starsClick for details
Samsung Galaxy A3 (2017) reviewSamsung Galaxy A3 (2017) review
The Samsung Galaxy A3 (2017 edition) is a compact and slim smartphone with a beautiful unibody design. With a decent processor, excellent screen and good camera, only the battery life is below average. But we feel that at 25/month on Pay Monthly, the phone is over-priced.
4 starsClick for details
USSD Code ListUSSD Code List
USSD (Unstructured Supplementary Service Data) codes are used in GSM phones to retrieve data from the service provider (EE, O2, Vodafone, etc.) USSD codes are commonly used to find out information about the phone, check account details, balance, usage, online banking, and other network services. They are sometimes called "secret codes".
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LG GBB60PZGFB reviewLG GBB60PZGFB review
The LG GBB60PZGFB is an unusually tall freestanding fridge-freezer with a gloss metallic finish. It's frost-free with a practical interior layout, and good value too. But what really makes this model stand out is its exceptionally efficient and quiet linear compressor, which achieves an unprecedented A+++ energy rating, making it the best energy-saving fridge-freezer that we know.
4 starsClick for details
Sony Xperia XZ review (updated)Sony Xperia XZ review (updated)
The Sony Xperia XZ is Sony's flagship phone for 2016. Slim and sleek, the XZ is a premium-build device running Android M and featuring a fast Snapdragon 820 processor with plenty of memory. Photography is a key strength too, thanks to its 23 megapixel camera with laser autofocus.
5 starsClick for details
Plusnet Mobile review (updated)Plusnet Mobile review (updated)
Plusnet is a UK-based broadband and phone provider, offering either standard or fibre broadband internet, including phone calls. YouView TV and BT Sport Lite are also available to broadband customers. On 29th November 2016, LIFE Mobile customers joined the Plusnet family and became Plusnet Mobile customers.
2 starsClick for details
Huawei Nova reviewHuawei Nova review
The Huawei Nova is a top-rated mid-range phone. With a premium-design metal body, it has the look of a high-end handset but for half the price. Its top features are its 5-inch high resolution screen, fingerprint scanner, fast 8-core processor, and very long battery life.
5 starsClick for details
HTC One A9s reviewHTC One A9s review
The HTC One A9s is a top mid-range phone, with an attractive slimline all-metal build. The 5-inch HD screen looks good, and the phone takes good pictures with its HDR cameras. Performance from the 8-core processor is strong, and battery life is reasonable too. Priced for value, this is an excellent buy.
5 starsClick for details
Best washing machine under 400 - 2016 (updated)Best washing machine under 400 - 2016 (updated)
At S21, we've picked the 3 best washing machines of 2016 for between 300 and 400 in the UK.
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