Galaxy S21 5GGray • 128 GB • Physical SIM + eSIM

Name: Galaxy S21 5G 128GB - Gray - Unlocked
Brand: Samsung
Price: 369.00 AUD
Availability: InStock
Rating: 4.18 (59 reviews)

(59 reviews)

A$369.00

Save A$1,000.00

GST inclusive*

Free delivery by 16 - 17 Sept

Express shipping by 15 - 16 Sept from A$8.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 5G

Overall rating

59 verified reviews

Rating details

Battery
3.8/5
Shipping
4.2/5
Lens & Camera
4.2/5
Accessories
3.8/5
Packaging
4.2/5
Overall performance
4/5
Appearance
4.2/5

Reviews

Tim O.
Verified purchase
Reviewed 19/4/26, Australia.
The visible condition is like brand new. Nice to have the same model as before, but with higher gigs. Cable transfer from old to new did not work, but wireless did. I still have work to do transferring 2 factor authentications.
Galaxy S21 5G 128GB - White - Unlocked
Galaxy S21 5G 128GB - White - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
6/4/26
Nick G.
Verified purchase
Reviewed 30/10/24, Australia.
Pleasantly surprised it exceeded my expectations everything works the way it should the phone is immaculate and the delivery was prompt nothing to complain about will certainly be buying any future phones from you guys
Galaxy S21 5G 128GB - Gray - Unlocked
Galaxy S21 5G 128GB - Gray - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
21/10/24
Steve B.
Verified purchase
Reviewed 13/4/25, Australia.
Great service, and a great phone too. Much better to get a quality refurbished phone than jumping on the "latest tech" bandwagon. Thanks guys! 👍👍
Galaxy S21 5G 256GB - Black - Unlocked
Galaxy S21 5G 256GB - Black - Unlocked
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
26/3/25
Ebon Y.
Verified purchase
Reviewed 18/2/25, Australia.
Really happy. Great deal and have had for a couple of weeks and hasn't glitched or shown any signs of fault. Have had previous bad experiences with other second hand phones but not this one!. Absolute winner! Thanks heaps Back Market!
Galaxy S21 5G 128GB - Gray - Unlocked
Galaxy S21 5G 128GB - Gray - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
26/1/25
Rebekah S.
Verified purchase
Reviewed 30/4/26, Australia.
Extremely happy. Postage was super quick & the phone is in perfect condition, it looks & runs like it's brand new.
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
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
19/4/26
Craig K.
Verified purchase
Reviewed 12/3/25, Australia.
Hi, Samsung galaxy S21 is great phone, no scratches in great condition. Travelling soon for a long time, bit worried about having to charge it all the time, that's what happened to my Samsung galaxy S11.
Galaxy S21 5G 256GB - Grey - Unlocked
Galaxy S21 5G 256GB - Grey - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
18/2/25
Wendy K.
Verified purchase
Reviewed 25/2/25, Australia.
I love my "new" phone. It feels so good that it's recycled at a fraction the price of a new phone, reducing waste, AND the phone is like new - not a scratch, and the functionality is guaranteed. I ordered express post for only $8 and it arrived in 2 days. Back Market was so efficient, it was carefully packaged with a a cable. I recommend Back Market and will use them again - eventually !
Galaxy S21 5G 128GB - Gray - Unlocked
Galaxy S21 5G 128GB - Gray - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
11/2/25

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

Durability
Overall performance
Camera
Screen quality

169 ozWeight
1080 x 2400Resolution
GrayColour
10 megapixelsFront camera
SamsungBrand
USB-CConnector
128 GBStorage
8 GBMemory (GB)
Triple (3x)Camera type

The Galaxy S21 5G is a flagship-level smartphone from Samsung, offering a balance of performance and features. This model is typically 3 generations old but still provides solid capabilities for everyday use.

Key features:

Display: 6.2-inch Dynamic AMOLED 2X with FHD+ resolution
Processor: Exynos 2100 (Global) or Snapdragon 888 (USA)
Camera: Triple rear cameras with 12MP wide, 64MP telephoto, and 12MP ultra-wide lenses
Connectivity: 5G compatible for fast network access
Storage: 128GB internal storage (variant-specific, not detailed here)

Who is this for?

The Galaxy S21 5G is suited for users seeking a high-performance Android device with a vibrant display and versatile camera system. It is ideal for tech enthusiasts, frequent travellers, or anyone needing a reliable smartphone for multimedia and multitasking.

Pros & Cons:

Pros	Cons
Excellent display quality with AMOLED technology.	No expandable storage available.
5G connectivity for faster network speeds.	Battery life varies depending on usage, not specified here.
Powerful processor suitable for multitasking and gaming.	Refurbished device may show signs of use, but undergoes quality checks.

Why refurbished?

Choosing a refurbished Galaxy S21 5G allows you to access a high-quality device with proven performance at a more sustainable value. Each device is tested and restored to ensure reliability, following Back Market’s strict quality standards. Learn more about our quality standards.

Weight: 169 oz
Resolution: 1080 x 2400
Colour: Gray
Front camera: 10 megapixels
Brand: Samsung
Connector: USB-C
Storage: 128 GB
Memory (GB): 8 GB
Camera type: Triple (3x)
Color (official name): Phantom Gray
Model: Galaxy S21 5G
SAR (body part): 1.40
Network: 5G
Foldable: No
Compatible with latest Update: Yes
Release year: 2021
Carrier compatibility: Unlocked
SIM card: Physical SIM + eSIM
Operating system: Android
Screen size (in): 6.2
Serie: Samsung Galaxy S
Screen type: Dynamic AMOLED 2X
Main camera: 12 megapixels

Choose location

Suggested searches

Popular searches

Galaxy S21 5GGray • 128 GB • Physical SIM + eSIM

Galaxy S21 5GGray • 128 GB • Physical SIM + eSIM

Restored professionally

Comes with

Often bought together

Customer reviews for Galaxy S21 5G

Overall rating

Rating details

Reviews

Reviews

Tim O.

Nick G.

Steve B.

Ebon Y.

Rebekah S.

Craig K.

Wendy K.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

Related articles

iPhone vs Android: which smartphone is right for you? | Back Market

How to factory reset an Android phone (4 quick scenarios) | Back Market

Some proof that refurbished electronics reduce the negative impact of tech on the planet | Back Market

Samsung Galaxy S25 Ultra vs S24 Ultra: is it worth the upgrade? | Back Market

Samsung Galaxy S24 series review: Is it still worth it in 2025? | Back Market

MacBook Air M4 review | Back Market | Back Market

Everything you need in an iPad Air M3 review | Back Market

Welcome to Back Market