- Galaxy S21 Plus 5G
Refurbished Samsung Galaxy S21 Plus 5G
Buy a refurbished Samsung Galaxy S21 Plus SIM-free with 85%+ battery health, 12-month warranty, 45-day returns and fast UK delivery.
Overview
Buy a Refurbished Samsung Galaxy S21 Plus SIM-Free
Not every great phone needs celebrating with fanfare. Some just get on with being exactly what they promised: reliable, well built and genuinely enjoyable to live with. The S21 Plus is one of those. A big, bright display that makes streaming and browsing feel comfortable and unhurried. A camera system that handles the moments that matter with competence. And a build quality that, a few years on, still feels considered and premium in the hand.
It doesn't have everything the latest models offer. But it has everything most people actually use, and it has it in abundance.
Every refurbished S21 Plus we sell at The Big Phone Store is tested and graded in-house: data-wiped, battery checked, unlocked and covered by a 12-month warranty. Less than you'd expect to pay. More than you'd expect to get.
What you get, at a glance
Network: SIM-free and unlocked for compatible UK networks
Testing: 90+ point quality check before dispatch
Battery health: Minimum 85% as standard
Like New battery: 100% guaranteed battery health
Warranty: 12 months included
Returns: 45-day returns process
Delivery: Free UK delivery over £30, free fast delivery over £150
Preparation: Tested, graded, data-wiped and dispatched in-house
Direct answer: Is a reconditioned Samsung Galaxy S21 Plus worth it?
Yes. A reconditioned Samsung Galaxy S21 Plus is worth it if you want a bigger Samsung screen, 5G, strong cameras and premium daily performance at a lower price. It is a smart buy for people who care more about value than owning the newest model. Testing, battery checks, warranty and returns make it safer than buying used privately.
Why Buy from The Big Phone Store?
Buying an older flagship can be a very smart move. You avoid the high price of a new phone, keep quality tech in use for longer and still get the protection of a proper retailer. The Big Phone Store has specialised in refurbished, recycled and reused electronics since 1999.
Experience: Refurbishing electronics since 1999 - You buy from a long-standing specialist
Trust: 4.8 Trustpilot rating with 80,000+ reviews - You can see proof from real UK shoppers
Security: Data-wiped and history checked, including CheckMEND where relevant - Lower risk than a private sale
Quality: 90+ point quality check - Core features are tested before dispatch
Support: UK-based customer support - Help is available if you need it
Sustainability: WEEE-certified recycler - Your upgrade helps reduce electronic waste
Stock: Website stock means it is actually in stock - No false availability
Device quality: OEM-quality parts or higher where parts are used - Repairs are handled to a proper standard
Key Features That Matter Day to Day
6.7-inch Dynamic AMOLED 2X display: A large, bright screen for streaming, browsing, video calls and maps.
120Hz refresh rate: Makes scrolling and app switching feel smooth.
Exynos 2100 processor: Strong enough for everyday apps, social media, shopping, banking, streaming and multitasking.
8GB RAM: Helps normal app switching feel responsive.
Triple rear camera system: Wide, ultra-wide and telephoto-style shooting give you more ways to capture daily photos.
3x hybrid optical zoom: Useful for events, travel, pets and detail shots without moving closer.
4,800mAh battery: A strong capacity for a large-screen phone, especially with checked battery health.
5G connectivity: Fast mobile data on compatible UK networks.
IP68 rating: Added dust and water resistance for normal everyday confidence.
Refurbished vs Used Samsung Galaxy S21 Plus
A refurbished Samsung Galaxy S21 Plus is professionally prepared before sale. A typical used Samsung Galaxy S21 Plus from a private seller may look cheaper, but it can come with unknown battery health, unclear history and no useful warranty.
Professionally Refurbished | Typical Used Phone |
90+ point testing before dispatch | May only be briefly checked |
Minimum 85% battery health | Battery health may be unknown |
Professionally data-wiped | Data removal may not be complete |
12-month warranty included | Usually no warranty |
Clear cosmetic grade | Condition can be unclear |
Network and history checks completed | Hidden finance or network risk may remain |
Direct answer: Is refurbished safer than buying used privately?
Yes. Refurbished is usually safer because the phone is tested, graded, data-wiped and sold with a warranty and returns process. A private used Samsung Galaxy S21 Plus may seem like a saving, but you often lose battery checks, support, history checks and a clear route back if something goes wrong.
Condition Grades Explained
Every refurbished Samsung Galaxy S21 Plus we sell is fully functional. The grade describes cosmetic condition, not performance.
Like New: Best for the cleanest look and 100% guaranteed battery health
Pristine: Best for excellent condition with very light signs of use
Very Good: Best for smart savings with minor cosmetic marks
Good: Best for the lowest price if visible wear does not bother you
"The S21 Plus introduced a phantom colour finish that shifts tone depending on the light, it’s quite beautiful. It's the kind of detail that makes you appreciate the phone more over time rather than less. Good design has a long shelf life." - The Big Phone Store Customer Service Team
Battery Health and Everyday Use
Every refurbished Samsung Galaxy S21 Plus comes with at least 85% battery health as standard. This is especially important on older models, where a private seller may not give you a reliable battery reading or any support after purchase.
Choose a Like New Samsung Galaxy S21 Plus if you want 100% guaranteed battery health. This is the best option if you stream often, use maps, take lots of photos, work from your phone or want the strongest battery option available.
Direct answer: What battery health will I get?
You will get at least 85% battery health as standard. If you choose a Like New refurbished Samsung Galaxy S21 Plus, you get 100% guaranteed battery health. For older flagship models, Like New is the strongest choice if battery life matters most.
How We Test Each Device
A cheap Samsung Galaxy S21 Plus usually reflects condition grade, storage, colour or a current offer, not weak functionality. Each device is checked before dispatch so you can save money without accepting private-seller uncertainty.
Testing includes:
Battery health and charging
Display and touchscreen
Fingerprint and face recognition
Rear and front cameras
Speakers and microphones
Buttons and haptics
Wi-Fi, Bluetooth and mobile signal
USB-C port, sensors and core functions
Three quality checks buyers rarely see anywhere else
Network and history checks: We complete checks, including CheckMEND where relevant, to reduce hidden-device risk.
Part-quality review: Where parts are used, we use OEM-quality parts or higher.
In-house control: Devices are tested, graded and dispatched by our own team, not passed through an unknown chain.
Technical Specifications
Specification | Samsung Galaxy S21 Plus Detail | Benefit |
Display | 6.7-inch Dynamic AMOLED 2X | Large screen for streaming and browsing |
Resolution | 1080 x 2400 pixels | Clear detail for apps, photos and video |
Refresh rate | Up to 120Hz | Smooth scrolling and gaming |
Chip | Exynos 2100, UK model | Strong everyday flagship performance |
Storage | 128GB or 256GB | Options for apps, photos and downloads |
Rear camera | 12MP wide, 64MP telephoto, 12MP ultra-wide | Flexible photos without Ultra pricing |
Video | Up to 8K recording | High-detail video capture |
Front camera | 10MP | Clear selfies and video calls |
Battery | 4,800mAh | Built for longer daily use |
Charging / port | USB-C, wired and wireless charging support | Modern charging options |
Connectivity | 5G, Wi-Fi 6, Bluetooth 5.0, NFC | Fast networks and easy payments |
What Comes in the Box?
Your order includes:
Refurbished Samsung Galaxy S21 Plus handset
Charging cable
Sustainable packaging
SIM tool where applicable
A plug is only included if stated on the listing. This helps reduce unnecessary electronic waste and avoids sending chargers many buyers already own.
Reconditioned Samsung Galaxy S21 Plus vs Samsung Galaxy S21
Feature | Samsung Galaxy S21 Plus | Samsung Galaxy S21 |
Display | 6.7-inch AMOLED | 6.2-inch AMOLED |
Battery | 4,800mAh | 4,000mAh |
Storage | 128GB or 256GB | 128GB or 256GB |
Camera | Triple rear camera | Triple rear camera |
Feel | Bigger and more immersive | Smaller and easier one-handed |
Best for | Streaming, battery and bigger-screen value | Compact flagship savings |
Choose the refurbished Samsung Galaxy S21 Plus if you want a larger display and bigger battery while still keeping costs low. Choose the Galaxy S21 if you want the cheapest entry into the S21 flagship range and prefer a smaller phone.
Warranty, Delivery and Returns
Benefit | Detail |
Warranty | 12-month warranty as standard |
Warranty upgrades | Upgrade to 2 years, 5 years or lifetime where available |
Returns | 45-day returns process |
Standard delivery | Free UK delivery over £30 |
Fast delivery | Free fast delivery over £150 |
Support | UK-based support from real people |
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.
4.9/5
Based on 9 customer
reviews
R
Ron
11 months ago
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!
Value for money
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Recycled packaging
J
Jojo
1 year ago
Awesome
Value for money
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Recycled packaging
T
Tracy
1 year ago
Purchased 2 devices around 1 month ago now and I have been nothing but happy, easy order process and the phones are just perfect.
Value for money
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Phone condition
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Recycled packaging
Frequently Asked Questions
Yes. It is SIM-free and unlocked for compatible UK networks, so you can use your current SIM or choose a SIM-only deal.
Yes. It is a strong value choice because you get a large AMOLED display, 5G, strong cameras and Samsung flagship features at a much lower refurbished price.
Yes. It has a triple rear camera system with wide, ultra-wide and zoom options, making it strong for everyday photos, travel, portraits and video.
It depends on what you need. The S21 Plus gives you a larger 6.7-inch display and bigger 4,800mAh battery. The standard S21 is better if you want the lowest price and a smaller phone.
Yes. Older refurbished flagships can offer excellent value because they still have premium hardware, while costing much less than newer models. Reusing a phone also helps reduce e-waste.
Second hand usually means previously owned. Refurbished means the device has been tested, graded, cleaned, data-wiped and sold with warranty support.
Yes. Lower prices usually reflect grade, storage, colour or current offers. Functionality is still checked before dispatch.
Delivery depends on the option chosen at checkout. Free UK delivery is available over £30, with free fast delivery over £150.