Galaxy S21 5G

(18,980 reviews)

€172.00

Save €687.00

Free delivery by 17 - 18 Jun

Express delivery by 16-17 Jun from €5.00

Restored professionally

Based on up to 100 points of inspection

Often bought together

Galaxy S21 5G

Grey • 128 GB • Dual Physical SIM + eSIM

Refurbished price:€172.00

Versus €859.00 new

Protective screen Panzerglass Galaxy S21 5G - Transparent

Refurbished price:€16.95

Total price: €188.95

These items might be sold and delivered by different sellers.

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Customer reviews for Galaxy S21 5G

Overall rating

18,980 verified reviews

Rating details

Accessories
4.1/5
Appearance
4.5/5
Battery
4/5
Lens & Camera
4.5/5
Overall performance
4.2/5
Packaging
4.5/5
Shipping
4.6/5

Reviews

Fiona M.
Verified purchase
Reviewed 10/02/2025, Ireland.
I can noy fault my experience with Back Market. I ordered the phone at 8.30 am on thursday and it was delivered to Ireland by 12pm on the Friday, the next day. The phone is perfect. Amazing quality. I will definitely buy more.
Galaxy S21 5G 256GB - Purple - Unlocked
Galaxy S21 5G 256GB - Purple - Unlocked
See item
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
30/01/2025
Liam D.
Verified purchase
Reviewed 12/08/2024, Ireland.
Excellent all around. Site was easy to use and kept me informed of postal delivery etc. I got two o hones and they are both excellent. The description was right on the mark and I will be definitely using thus site again.
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
See item
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
29/07/2024
Anne H.
Verified purchase
Reviewed 10/09/2023, Ireland.
I love my new phone, it really does feel brand new. Being able to go sim only will halve my phone bill. The whole process was very easy, have recommended Back Market to several people already. No more massive bills, delighted
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
See item
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
26/08/2023
John M.
Verified purchase
Reviewed 01/10/2025, Ireland.
Great, it arrived on time and was simple to transfer all the data across ftom my old mobile to my new one.
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
See item
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
10/09/2025
James F.
Verified purchase
Reviewed 15/12/2024, Ireland.
I'm very happy with my purchase it's in mint condition and working perfectly. I would recommend Back Market to anyone
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
See item
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
25/11/2024
Conor F.
Verified purchase
Reviewed 09/08/2023, Ireland.
First time buying a refurbished phone and will continue to by refurbished. . . . . . I have been using the phone for a while now and it is next to new, I am very happy with it and I will be consulting Back Market should I need any other devices. I would highly recommend!
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
See item
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
26/07/2023
Ciara C.
Verified purchase
Reviewed 08/09/2025, Ireland.
Paid for a premium refurbished unlocked phone. When the phone came it was locked to another network. I had to return the phone leaving me with no phone for some days. I was not impressed. Will not use this site again.
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
See item
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
27/08/2025

Everything you ever wanted to know about the Galaxy S21 5G

Durability
Overall performance
Camera
Screen quality

Triple (3x)Camera Type
Dynamic AMOLED 2XScreen type
10 megapixelsFront camera
NoFoldable
15,17 cmHeight
5GNetwork
169 gWeight
128 GBStorage
7,12 cmWidth

The Galaxy S21 5G is a powerful smartphone that combines cutting-edge technology with a sleek design. Released in January 2021, this device remains a strong contender in the smartphone market, offering 5G connectivity and impressive camera capabilities.

Key features:

Release Date: January 2021
Display: 6.2-inch Dynamic AMOLED 2X, FHD+ resolution
Processor: Exynos 2100 (International) / Snapdragon 888 (USA)
Camera: Triple-camera system with 12MP ultra-wide, 12MP wide, and 64MP telephoto lenses
Connectivity: 5G compatible for ultra-fast downloads and low-latency performance.

Who is this for?

The Galaxy S21 5G is ideal for users looking for a high-performance smartphone with excellent camera features. It suits students, professionals, and anyone who enjoys capturing high-quality photos and videos while staying connected with the latest technology.

Pros & Cons:

Pros	Cons
Vibrant display with 120Hz refresh rate.	No expandable storage option.
Versatile camera system for various photography styles.	Plastic back may feel less premium than glass alternatives.

Why refurbished?

Choosing a refurbished Galaxy S21 5G allows you to enjoy a top-tier smartphone while being eco-conscious. Each device is thoroughly inspected and tested to meet Back Market’s quality standards, ensuring reliability. Scopri di più sui nostri standard di qualità.

Camera Type: Triple (3x)
Screen type: Dynamic AMOLED 2X
Front camera: 10 megapixels
Foldable: No
Height: 15,17 cm
Network: 5G
Weight: 169 g
Storage: 128 GB
Width: 7,12 cm
Main camera: 12 megapixels
SIM card: Dual Physical SIM + eSIM
Carrier compatibility: Unlocked
Memory (GB): 8 GB
SAR head: 0,456
OS: Android
Model: Galaxy S21 5G
Brand: Samsung
Colour: Grey
SD Card Slot: No
SAR body: 1,509
Serie: Samsung Galaxy S
Resolution: 1080 x 2400
Depth: 0,79 cm
Screen size (in): 6.2
Compatible with latest Update: Yes
Color (official name): Phantom gray
Manufacturer Ref: SM-G991B/DS
Connector: USB-C
Year of Release: 2021

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Galaxy S21 5G

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Customer reviews for Galaxy S21 5G

Overall rating

Rating details

Reviews

Reviews

Fiona M.

Liam D.

Anne H.

John M.

James F.

Conor F.

Ciara C.

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Everything you ever wanted to know about the Galaxy S21 5G

Durability

Overall performance

Camera

Screen quality

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