Personal Business Coverage checker Store locator Log in Register Shop Support Blog 5G Samsung Galaxy S21 5G Already on Three? Upgrade to this phone Business customers: See business deals Choose your colour Phantom Grey Phantom Pink Phantom Violet Phantom White Choose your storage 128GB 256GB Get a £100 gift card when you switch Black Friday deal - 6 months half price - £43 from month 7, save £465 and claim free 4 months YouTube Premium subscription 100GB data £29.00 upfront cost £43.00 £21.50 a month 24 month plan Unlimited minutes Unlimited texts Personal Hotspot Go Roam Around the World Full plan details See all plans and bundles Add to basket Pay As You Go available for £669 + min. £10.00 Add-on FREE UK delivery - get it Tues 30 Nov Delivery details FREE in-store collection Store details Get paid for your old device Recycle your old device with us, and earn some money back. It's easy: Get a quote Buy your new device Send us your old phone Get started Why Samsung Galaxy S21 5G? Style meets substance with the Samsung S21. Easily capture share-ready photos and videos – no filter needed with the superb triple camera system. It looks and feels amazing thanks to the sleek metal design and premium haze finish, making smudges and fingerprints a thing of the past. Samsung’s fastest ever processor delivers outstanding performance and the dynamic AMOLED 2x display keeps everything looking smooth. ... Read more Related products All Samsung phones Samsung Galaxy S21 Ultra 5G Samsung Galaxy Z Fold3 5G Samsung Galaxy Z Flip3 5G Samsung Galaxy A03s Offers available with Three Free 4 months YouTube Premium Purchase either the Samsung Galaxy S21, S21+ or S21 Ultra between 14th January 2021 and 5th March 2022 and you can claim 4 months YouTube Premium absolutely free. Watch YouTube uninterrupted with ad-free offline videos. For full terms see here. Get a £100 gift card when you switch to Three Purchase any device on a 24m unlimited plan with 6 months half price and get a £100 gift card when you switch to Three. Just send us your PAC code within 14 days of purchase. Choose between a £100 Amazon gift voucher or a £100 pre-paid Mastercard. Offer ends 12 December. Voucher will arrive 45 days after purchase. See our full terms for more info. Access top apps with Samsung Boost Buy a Samsung Galaxy Fold3 5G, Flip3 5G, S21, S21+, or S21 Ultra before 31 December 2021 and boost your experience. Enjoy premium free trials of apps like Deezer, YouTube Premium, Calm, Google Play Pass, and more. Head over to the Samsung Boost site for more details. Enjoy exclusive offers from brands you love. Save money at cineworld, Uber Eats and more. Plus get pre-sale tickets to major UK festivals. Discover Three+ Features The ultimate in self-expression Make every moment epic with Galaxy S21 5G's next generation camera and video. Create high-res stills with 8K Video Snap and get share-ready shots first time, every time with Single Take. Galaxy S21 5G is unashamedly different with sleek, contour-cut metal housing and stylish colours. It's the ultimate combination of smart tech and stylish looks. Next Generation Camera 8K Video Snap Durable Design Gorilla® Glass Victus & Glastic Rear Striking Colour Dynamic AMOLED 2X Share instantly with next generation cameras The power to take your best shots yet. Shoot with all your video cameras at once, or star in your own movie by recording front and rear together. The action is super steady and life-like too. Shoot incredibly detailed 8K Videos, then pull out hi-res stills with 8K Video Snap - perfect for stunning portrait expressions, epic landscapes and everything in-between. And say goodbye to endless re-takes with Single Take and 5x more facial recognition. What's more, there's tons of features like night mode, studio lighting and natural bokeh effects to bring out the beauty in every image. Stylish shades that reflect you Be unashamedly different with Galaxy S21 5G. Boasting a sleek new shape and stylish shades, Galaxy S21 5G is the ultimate in self-expression. The contour-cut metal camera fuses beautifully with the device, and Samsung's new frosted haze effect and metal frame look and feel amazing, making smudges and fingerprints a thing of the past. Featuring the toughest Gorilla® Glass Victus, Glastic Rear and an AL7s10 Metal Frame for protection and peace of mind, Galaxy S21 5G is designed to look pristine. Speed, power, creativity... Galaxy S21's 5G's Exynos 2100 5nm processor brings all the performance you need. Packed with the oomph to rule your social feed while effortlessly keeping up with 8K video editing. Get a smooth, console-quality gaming experience. Never-miss-a-moment in connectivity. Connect to speedy 5G1, make clearer video calls and download twice as fast. 5nm processor 8GB RAM 8K Camera A screen to turn heads Treat your eyes with Galaxy S21 5G's Dynamic AMOLED 2X display that keeps everything looking brilliant and smooth. See movies in stunning colour. The 6.2" Infinity-O Display allows you to game or watch your favourite film even in bright sunlight. Scrolling is silky smooth and interactions are incredibly responsive. What's more, the new 120Hz adaptive refresh rate levels up for gaming or levels down when scrolling social media feeds to save your battery. Unreal power, packaged neatly inside With vault-like security and a binge-worthy battery, Galaxy S21 5G has your back no matter what. Stream, share and create - your content stays totally secure. The large sensor, smarter AI and 5nm processor put next generation, vault-like security in your hands. From faster fingerprint authentication to next-level privacy controls, there's nothing holding you back. Galaxy S21 5G is durable too. Featuring IP682 and Dust Resistance, it's fit for almost any environment. Faster Exynos 2100 Processor Tougher Gorilla® Glass Victus AL7s10 Metal Frame More storage options 128GB / 256GB What's in the box Galaxy S21 5G comes packaged with just what you need - USB Type-C data and charging cable, ejection pin and Quick Start Guide. Just another way of being good to the environment. Compare the Galaxy S21 range Galaxy S21 Ultra 5G Galaxy S21+ 5G Galaxy S21 5G DISPLAY 6.8" 3200 x 1440 WQHD+ (515 ppi) Dynamic AMOLED 2X - 120Hz Adaptive 6.7" 2400 x 1080 FHD+ (394 ppi) Dynamic AMOLED 2X - 120Hz Adaptive 6.2" 2400 x 1080 FHD+ (421 ppi) Dynamic AMOLED 2X - 120Hz Adaptive BODY Gorilla® Glass Victus AL7s10 Metal Frame Gorilla® Glass Victus AL7s10 Metal Frame Gorilla® Glass Victus + Glastic Rear AL7s10 Metal Frame REAR CAMERAS 12MP ƒ2.2 Ultra Wide 108MP ƒ1.8 Wide 10MP ƒ2.4 Telephoto 10MP ƒ4.9 Telephoto Laser AF Time-of-Flight 12MP ƒ2.2 Ultra Wide 12MP ƒ1.8 Wide 64MP ƒ2.0 Telephoto - - 12MP ƒ2.2 Ultra Wide 12MP ƒ1.8 Wide 64MP ƒ2.0 Telephoto - - FRONT CAMERA 40MP ƒ2.2 Wide 10MP ƒ2.2 Wide 10MP ƒ2.2 Wide PERFORMANCE Exynos 2100 Exynos 2100 Exynos 2100 BATTERY 5,000 mAh3 4,800 mAh3 4,000 mAh3 CHARGING 25W Super Fast Charging 15W Fast Wireless Charging Wireless PowerShare 25W Super Fast Charging 15W Fast Wireless Charging Wireless PowerShare 25W Super Fast Charging 15W Fast Wireless Charging Wireless PowerShare MEMORY 12GB RAM 16GB RAM 8GB RAM - 8GB RAM - STORAGE 128GB 256GB 512GB 128GB 256GB - 128GB 256GB - SOUND Stereo Speakers by AKG Dolby Atmos Stereo Speakers by AKG Dolby Atmos Stereo Speakers by AKG Dolby Atmos WATER & DUST RESISTANCE IP682 IP682 IP682 COLOURS Phantom Black Phantom Silver - - Phantom Violet Phantom Silver Phantom Black - Phantom White Phantom Grey Phantom Pink Phantom Violet CONNECTIVITY 5G1 WiFi 6E UWB Tracking S Pen4 5G1 WiFi 6 UWB Tracking - 5G1 WiFi 6 - - WEIGHT 227g 200g 169g 1 5G functionality requires compatible network connection and tariff. 2 Based on test conditions of submersion in up to 1.5 metres of fresh water for up to 30 minutes. 3 Typical value based on testing under third party lab conditions. Rated capacity for Galaxy S21 Ultra 5G is 4,855 mAh, 4,660 for Galaxy S21+ 5G and 3,880 mAh for Galaxy S21 5G. 4 S Pen sold separately. Performance Display Design Camera What's in the box? Specifications FAQs Why choose Three? Our combined 3G & 4G network covers 99% of the UK outdoor population. Discover our big network According to Ookla, our 5G's the fastest around. Learn more A big network for the little connections that make life richer. Discover our big network Delivery Free next working day delivery Free collection from store We offer next working day delivery if you order before 20:00, and orders placed after 20:00 will arrive in 2 working days. We deliver between 09:00 and 18:00 on weekdays, but not on weekends or bank holidays. For more info, please check our delivery details. Pre-orders You’ll get an estimated delivery date when you place your order and we’ll text to let you know when it’s with our courier (DPD). You’ll be able to track it and change your delivery date if you want to. Returns You've got 14 days to return or exchange any new, unused device or accessory you bought online. Please make sure you keep your delivery note or collection receipt. If you want to exchange for another make/model there'll be a small charge as set out in our Price Guide. See Refunds & Returns for more info, or call us on 0333 338 1001. Coverage and network status Explore Three Mobile Phones. Broadband. Tablets. Top-up. SIM Only deals. Pay As You Go. Three+ Three App. Popular phones Samsung Galaxy S21. Samsung Galaxy S21 Plus. Samsung Galaxy S21 Ultra. Samsung Galaxy Z Series. iPhone 13. iPhone 13 mini. iPhone 13 Pro. iPhone 13 Pro Max. Popular products iPhone. Samsung. Honor. Huawei. Oppo. OnePlus. Xiaomi. Google Pixel. Our company About us. Terms & Conditions. Social Commitment. Business. Code of practice. Wholesale. Modern Slavery Statement. Corporate. Gender Pay Gap Report. Careers. Accessibility. 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