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Galaxy S21 5G
- Excellent
- 256 GB
- Physical SIM + eSIM
- Grey
A$369.25
Save A$999.75
GST inclusive*
Proudly refurbished by Retechify
Free delivery by 4 - 5 Nov
GST is shown Learn more
Comes with
Compatible charging cable
Often bought together
Galaxy S21 5G
Grey • 256 GB • Physical SIM + eSIM
Refurbished price:A$369.25
A$1,369.00 newVersus A$1,369.00 new
Total price: A$618.25
These items might be sold and shipped by different sellers.
Customer reviews for Galaxy S21 5G
Overall rating
4.2/54.2/561 verified reviewsRating 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
Reviews
Tim O.
Verified purchaseReviewed 19/4/26, Australia.
5/5The 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
Purchased
6/4/26
Wendy K.
Verified purchaseReviewed 25/2/25, Australia.
5/5I 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
Purchased
11/2/25
Nick G.
Verified purchaseReviewed 30/10/24, Australia.
5/5Pleasantly 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
Purchased
21/10/24
Alychia S.
Verified purchaseReviewed 6/8/24, Australia.
5/5Brought a s21 for my daughter. Being the good condition option we were expecting a few scratches on the body and screen, to our surprise it was in perfect condition. The battery was dead when it first arrived which we liked so we could fully charge it right from the start. It holds battery well. She only has to charge it every second day and is on it quite a bit, as with any teenager. Delivery was also really quick. Came within two days of ordering. We will definitely be buying from here again for future phones and maybe other products.
Galaxy S21 5G 128GB - Gray - Unlocked
Galaxy S21 5G 128GB - Gray - Unlocked
Condition
Good
Purchased
28/7/24
Peter T.
Verified purchaseReviewed 18/5/25, Australia.
5/5Really delighted with my new phone which arrived quickly, in great condition and very easy to set up. Thank you Back Market!
Galaxy S21 5G 128GB - Gray - Unlocked
Galaxy S21 5G 128GB - Gray - Unlocked
Condition
Good
Purchased
1/5/25
Tengawhai T.
Verified purchaseReviewed 7/3/25, Australia.
5/5Fast delivery, came in bubble wrap. With a changer that i was very happy with. Will be buying from here again that's for sure
Galaxy S21 5G 128GB - Black - Unlocked
Galaxy S21 5G 128GB - Black - Unlocked
Condition
Excellent
Purchased
14/2/25
Rebekah S.
Verified purchaseReviewed 30/4/26, Australia.
5/5Extremely 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
Purchased
19/4/26
Popular searches
Everything you ever wanted to know about the Galaxy S21 5G
Durability
Overall performance
Camera
Screen quality
6.2Screen size (in)
12 megapixelsMain camera
169 ozWeight
10 megapixelsFront camera
Dynamic AMOLED 2XScreen type
UnlockedCarrier compatibility
Physical SIM + eSIMSIM card
2021Release year
GreyColour
The Galaxy S21 5G is a flagship-level smartphone launched in 2021, offering a balance of performance and modern features. It is suitable for users who want a versatile device for everyday use, multimedia, and light gaming. As a pre-owned device, it provides an affordable way to access high-end technology.
Key features:- Model: Galaxy S21 5G
- Display: 6.2-inch Dynamic AMOLED 2X, 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 data speeds
The Galaxy S21 5G is ideal for tech-savvy users, students, or professionals seeking a high-performance device with a vibrant display and capable cameras. It’s suitable for those who want a premium experience without buying new.
Pros & Cons:| Pros | Cons |
|---|---|
| Vibrant AMOLED display with smooth 120Hz refresh rate | Battery life may vary depending on usage |
| Powerful Exynos/Snapdragon chipset | No headphone jack |
| 5G connectivity for fast data speeds | Refurbished condition may show minor signs of use |
Choosing a refurbished Galaxy S21 5G allows you to access a high-end smartphone at a more affordable price. Each device undergoes rigorous testing and quality checks to meet Back Market’s standards. Learn more about our quality standards.
- Screen size (in)
- 6.2
- Main camera
- 12 megapixels
- Weight
- 169 oz
- Front camera
- 10 megapixels
- Screen type
- Dynamic AMOLED 2X
- Carrier compatibility
- Unlocked
- SIM card
- Physical SIM + eSIM
- Release year
- 2021
- Colour
- Grey
- Color (official name)
- Phantom Gray
- Serie
- Samsung Galaxy S
- Foldable
- No
- Network
- 5G
- Storage
- 256 GB
- Operating system
- Android
- Manufacturer version
- SM-G991B
- Model
- Galaxy S21 5G
- Memory (GB)
- 8 GB
- Brand
- Samsung
- Resolution
- 1080 x 2400
- Compatible with latest Update
- Yes
Galaxy S21 5G
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