Samsung Galaxy S21 Plus SIM-Free 256GB Phantom Black
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Fully Certified Refurbished Phone (tested, data-wiped, and ready to use)
USB Charging Cable
SIM Card Removal Tool (where applicable)
Free Microfiber Cleaning Pouch
Presented in a Premium Gift-Ready Box
12-Month Standard Warranty
Optional Upgrades at Checkout
Premium Gift Bag for a complete gifting experience
Upgrade to a brand-new battery
Extend your warranty to 24 months
Buy Samsung Galaxy S21 Plus for Sale – Get the Best Price (UK)
Certified Refurbished Samsung Galaxy S21 Plus (UK) with 85%+ battery health, 12-month warranty. Best online prices - limited-time deals. ✅ SIM-Free & Unlocked – use any UK network ✅ Fast, Free UK Delivery ✅ Trusted UK Retailer since 1999
Why Choose the Galaxy S21 Plus 5G?
The Samsung S21 Plus 5G is a flagship phone with a balance of power, style, and performance. With its 6.7-inch Dynamic AMOLED display, Exynos 2100 chip, and triple-lens camera system, this device is made for people who want top features without being tied to a contract.
From streaming and gaming to photography and everyday tasks, the S21 Plus 5G delivers smooth, fast, and reliable performance.
Key Features
6.7” Dynamic AMOLED 2X Display – 120Hz refresh rate for smooth visuals
Triple Camera System – 12MP wide + 12MP ultra-wide + 64MP telephoto
30x Space Zoom + Night Mode + 4K video recording
4800mAh Intelligent Battery – all-day power with adaptive management
Exynos 2100 Processor – great for multitasking, apps, and gaming
5G Ready – enjoy ultra-fast download and streaming speeds
Durability – Gorilla Glass Victus provides protection against drops and scratches
Super Fast Charging – hours of power in minutes
Design and Display
The Galaxy S21 Plus stands out with its sophisticated design and exceptional build quality, making it a true premium smartphone.
Available in stunning colours like Phantom Black, Phantom Silver, and Phantom Violet, the S21 Plus lets you express your style while enjoying a device that feels as good as it looks. The matte finish on the glass back means your phone always looks clean and sleek.
The solid glass back isn’t just about looks; it enables both wireless charging and reverse wireless charging. So you can power up your Galaxy Buds or other compatible devices with ease.
As the middle phone in the S21 series, the Samsung S21 Plus strikes the perfect balance between features and price. You get a premium feel and top-tier display without the high cost.
If you’re looking to save money while still getting a high-quality device, the S21 Plus is a smart choice that doesn’t compromise on performance or style.
Why Buy from The Big Phone Store for the best deals?
Best UK prices – compared daily
All phones tested & certified by our UK team
Unlocked & SIM-free – freedom to choose your network
Eco-friendly packaging – sustainable and secure
Purchasing from The Big Phone Store helps reduce electronic waste and supports sustainability.
You can expect a straightforward process, quality packaging, and reliable delivery.
4.7-star Trustpilot rating – thousands of happy customers
Other S21 Models
Galaxy S21 Ultra 5G – the ultimate flagship with S Pen support
Galaxy S21 5G – compact flagship power
Galaxy S21 FE 5G – Fan Edition with great value
Get your Next Phone at The Big Phone Store
The S21 Plus 5G is a big-screen flagship with great cameras, long battery life, and smooth 5G performance.
Shop for smartphones at The Big Phone Store and discover a wide range of high-quality devices. We sell the latest smartphones and make every purchase easy and secure. Order today!
Explore Samsung Galaxy S21 Plus Available Options
For more Galaxy S21 Plus, explore the wide range of colours and storage options, giving you the flexibility to choose the perfect model for your needs.
Available Samsung Galaxy S21 Plus Options | |
Colours | Storage Capacities |
More Samsung Galaxy Devices & Accessories
Looking for a Samsung Galaxy device without the hefty price? We offer a great selection of Samsung refurbished tablet and refurbished Samsung watches with the latest features at affordable prices:
Choose from models to fit any budget, from the latest to budget-friendly options
Keep charged with our Samsung charger and charger cable
Protect your device with a Samsung screen protector and other essentials
No matter what you're looking for, our Samsung collection has the perfect device and accessories for you!
For More Refurbished Phones & Devices
Looking for more unbeatable SIM-Free Phones? Explore our full range of Apple Refurbished devices, including the latest Refurbished iPhones, as well as top picks from Samsung Refurbished and Google Refurbished. Whether you're after performance, value, or sustainability, our collection of refurbished phones offers the best in quality and price.
Turn Old Tech into Cash Trade-In Deals
Want to upgrade while saving more? Ready to clear out your old devices? At The Big Phone Store, you can sell phone in just a few clicks and get paid fast.
Whether you're upgrading or simply decluttering, we offer a hassle-free phone trade-in process with competitive prices and free shipping.
Reliable Power
This Galaxy S21 Plus 5G comes with 85% minimum battery health
Better than competitors' 80% average
What's In The Box?
- Your Galaxy S21 Plus 5G
- SIM Removal Tool
- Charging Cable
- 100% Sustainable and Recyclable Box
- One Month Free Phone Insurance
12 month warranty on your Galaxy S21 Plus 5G
Dont miss out on upgrading to 24 months warranty
The Galaxy S21 Plus 5G from The Big Phone Store comes with a Big warranty! The policy covers any internal fault that may arise through normal use during the 12 month warranty period.
Saving the Planet
Buying a refurbished Galaxy S21 Plus 5G is a smart way to reduce your environmental footprintWith over a billion electronic devices produced each year—many of which eventually end up in landfills—choosing a refurbished Galaxy S21 Plus 5G helps break the cycle of waste. Every product we restore and resell keeps valuable materials in use longer, reducing harmful electronic waste and supporting a more sustainable future.
This Galaxy S21 Plus 5G undergoes rigorous testing to guarantee top-tier reliability
- Lock Detection Checks for manufacturer, carrier, & software locks.
- Diagnostics Automated component functionality scan.
- Battery Health Battery capacity check to receive and hold a charge.
- Authenticity Replacement part & background check.
- Cellular Service Check SIM, place test call & sms message.
- Erase & Reset Secure data wipe and reset to factory default.
Galaxy S21 Plus 5G Customer Reviews
We value the opinions of all of our customers, and we're sure that you do too! If you're still unsure about buying the Galaxy S21 Plus 5G you want, take a look at the reviews our customers have left for us.
Wow, I got a Samsung Galaxy S21 Plus, and it’s in pristine condition! The phone feels brand new and works like a charm. I'm thrilled with the speed and battery life. Buying process was super easy, and they were quick with delivery. Fantastic value for money!
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Awesome
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Purchased 2 devices around 1 month ago now and I have been nothing but happy, easy order process and the phones are just perfect.
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Phone came quickly and I am happy it did, best purchase for a while, love the design of this phone and it is a great size
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