Galaxy S21 5G128 GB•Silver

Name: Refurbished Galaxy S21 5G
Brand: Samsung
Availability: InStock
Rating: 4.7 (1108 reviews)

4.7/5(1,108 reviews)

£201.60

Save £730.40

Standard Delivery by 14 - 16 OctExpress Delivery by 12 Oct for £12.00

Restored professionally

Based on up to 100-points of inspection

The PhoneMart Promise

Based on up to 100-points of inspection

We measure each battery's health and capacity against strict standards, and replace any that don't make the grade, so you get power you can rely on all day.
The display is switched on and looked over closely for any blemishes, so there are no marks, dust spots or discolouration to spoil the view.
Where a charger is included, the cord and connectors are checked for wear, and the plug is confirmed to fit sockets.
Before it ships, every device gets a thorough professional clean and polish so it feels fresh in your hands.
Every lens is put to work, so we can confirm sharp photos, smooth video and reliable performance on video calls.
A full factory reset wipes the device clean, securely erasing all previous data and restoring the original settings.
We confirm the network status up front, so you know exactly whether the device is locked or unlocked before it arrives.
Cards are inserted to make sure the device reads SIM and memory cards correctly, and that every tray and slot works smoothly.
Each button is pressed to check it responds straight away and does exactly what it should, from volume to lock to power.
If any parts are fitted during refurbishment, they are tested for compatibility and held to the same standards as the originals.
We run the IMEI to confirm it is clean and never blacklisted, and that the device details match the manufacturer's records.
The moisture indicator inside the device is inspected to rule out any history of water or liquid damage.
Every port, including the headphone, USB and Ethernet connections, is checked to make sure it connects and works reliably.
Face and fingerprint unlock, along with any voice recognition, are tested to make sure they work quickly and accurately.
Positioning is checked for accurate GPS, so maps and location apps behave exactly as they should.
External sensors, such as proximity, brightness, laser measurement and heart rate, are checked for precise and responsive readings.
Screws, casing, frames and other mechanical parts are examined to confirm they are original or quality replacements, and any replacement has to match or beat industry standards.
We confirm that Wi-Fi and Bluetooth connect quickly and hold a stable signal.
Speakers and microphones are inspected and fine tuned so audio records and plays back clearly.
The flash and every indicator light are tested to confirm they light up and work correctly.
Any features that are specific to your device are checked against the same standards, so nothing gets missed.

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Body

Visible signs of useVerified partsBattery for daily use

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Galaxy S21 5G

Fair
Standard battery
Silver
128 GB
Physical SIM + eSIM

£201.60

£932.00 newSave £730.40

14-day returns

Set up the return in just a few clicks in your PhoneMart account.

Send the device back within 14 days of receiving it. Return postage is paid by you unless the item is faulty, damaged or not what you ordered.

Get your cash back within 3 business days of the seller receiving the device.

Proudly refurbished by PhoneMart Privacy policy

Comes with

Compatible charging cable

Fair-Standard battery-Silver-128 GB-Physical SIM + eSIM

£201.60

£932.00 newSave £730.40

£201.60

£932.00 newSave £730.40

Customer reviews for Galaxy S21 5G

Overall rating

4.7/5

1,108 verified reviews

Rating details

Appearance: 4.7/5
Battery: 4.5/5
Delivery: 4.8/5

Top reviews with photos

Reviews

Denise Rutherford

Verified purchase

5/5

Reviewed 28/06/2026, United Kingdom.

The phone was in great shape and looked like new. I liked the colour. The only downside was that after setting it up I had to install at least eight software updates. Now it's working properly. I would buy another phone from PhoneMart if I needed one since their prices are much better than other used phone sellers.

Galaxy S21 5G 128GB Purple Unlocked | PhoneMartSee item

Condition FairPurchased 12/06/2026

Rebecca Lee

Verified purchase

5/5

Reviewed 17/03/2025, United Kingdom.

Delivery was quick and the purchase was good.

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition ExcellentPurchased 01/03/2025

Christopher Davies

Verified purchase

5/5

Reviewed 30/11/2024, United Kingdom.

The phone arrived quickly and was in excellent condition.

Galaxy S21 5G 128GB Purple Unlocked | PhoneMartSee item

Condition FairPurchased 16/11/2024

Emma Doyle

Verified purchase

5/5

Reviewed 19/01/2024, United Kingdom.

This is my second great purchase from PhoneMart. The Samsung S21 arrived quickly and in perfect condition before Christmas. It's definitely better to get a used higher-spec phone for the price of a new entry-level one. Since most phones don't have SD card slots now, it's best to get more internal storage if you keep files on your phone.

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition FairPurchased 03/01/2024

Richard Stewart

Verified purchase

5/5

Reviewed 27/10/2023, United Kingdom.

Brill item.excellent experience

Galaxy S21 5G 128GB Silver Unlocked | PhoneMartSee item

Condition ExcellentPurchased 21/10/2023

Leigh Collins

Verified purchase

5/5

Reviewed 23/08/2023, United Kingdom.

Great product! It works perfectly.

Galaxy S21 5G 128GB Black Unlocked | PhoneMartSee item

Condition PremiumPurchased 04/08/2023

Fiona Lewis

Verified purchase

5/5

Reviewed 01/09/2026, United Kingdom.

The phone arrived in excellent condition and came very quickly.

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition ExcellentPurchased 24/08/2026

Christopher Lee

Verified purchase

5/5

Reviewed 31/08/2026, United Kingdom.

The phone arrived in very good condition and I had it up and running within thirty minutes.

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition FairPurchased 15/08/2026

Mohammed Sheikh

Verified purchase

5/5

Reviewed 28/08/2026, United Kingdom.

Perfect

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition ExcellentPurchased 17/08/2026

Marcel Stevens

Verified purchase

5/5

Reviewed 28/08/2026, United Kingdom.

Very good phone

Galaxy S21 5G 128GB Grey Unlocked | PhoneMartSee item

Condition FairPurchased 12/08/2026

Common questions about the Galaxy S21 5G

Durability

Overall performance

Camera

Screen quality

Silver

Colour

128 GB

Storage

Physical SIM + eSIM

Sim

Unlocked

Carrier compatibility

Yes

Compatible with latest update

0,79 cm

Depth

Foldable

10 megapixels

Front camera

15,17 cm

Height

Samsung Galaxy S21 5G fits seamlessly into your daily routine, delivering a bright, clear display and smooth performance whether you're streaming, browsing, or gaming. The 6.2 inch Dynamic AMOLED 2X screen keeps visuals sharp and colours vivid, making every moment on screen stand out.

Released in 2021, the Samsung Galaxy S21 5G gives you a versatile camera setup with 12 megapixel main and 10 megapixel front cameras to capture your moments clearly. Its unlocked 5G capability and dual SIM options ensure you stay connected with fast mobile data and flexible network choices.

Key features

Screen size: 6.2 inches Dynamic AMOLED 2X
Memory: 8 GB for smooth multitasking
Main camera: 12 megapixels for detailed photos
Front camera: 10 megapixels sharp selfies
Mobile network: 5G unlocked for fast connectivity
SIM card: Dual Physical SIM and eSIM support

Who is this for?

The Galaxy S21 5G suits anyone who wants a reliable smartphone with a vivid display for media and everyday use. It works well for people who value clear photos and selfies, whether for social sharing or personal memories.

This phone is also a strong choice for travellers or professionals who benefit from dual SIM and eSIM flexibility, letting you manage work and personal lines on one device. Its 5G capability keeps you connected where networks support it.

What you get and what to know

What you get	Good to know
Clear display with 6.2 inch Dynamic AMOLED 2X	Connectivity works on unlocked 5G networks
Camera setup with 12 MP main and 10 MP front lenses	Storage has no expandable card slot
Memory 8 GB RAM for app performance	SIM options include Dual SIM and eSIM support

Why buy it refurbished?

Choosing a refurbished Samsung Galaxy S21 5G helps you get a premium smartphone experience at a better value. Each device goes through thorough inspections covering screen, battery, cameras, buttons, and connectivity to ensure full functionality.

Refurbished phones from PhoneMart come factory reset and graded by cosmetic condition while maintaining high operational standards. Buying refurbished also supports sustainability by extending the life of quality electronics.

ColourSilver

Storage128 GB

SimPhysical SIM + eSIM

Carrier compatibilityUnlocked

Compatible with latest updateYes

Depth0,79 cm

FoldableNo

Front camera10 megapixels

Height15,17 cm

Main camera12 megapixels

Memory gb8 GB GB

Mobile network5G

OsAndroid

Resolution1080 x 2400

Sar body1,509

Sar head0,456

Screen size in6.2 inch

Screen typeDynamic AMOLED 2X

Sd card slotNo

Sim cardDual Physical SIM + eSIM

Weight169 g g

Width7,12 cm

Year of release2021

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Galaxy S21 5G128 GB•Silver

Restored professionally

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Customer reviews for Galaxy S21 5G

Overall rating

Rating details

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Reviews

Popular searches

Common questions about the Galaxy S21 5G

Key features

Who is this for?

What you get and what to know

Why buy it refurbished?

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