Free delivery by 3 - 6 July
Express shipping by 2 - 3 July from A$8.00
United States
English (US)
All guaranteed 100% functional









Compatible charging cable
Battery
3.8/5
Shipping
4.1/5
Lens & Camera
4.2/5
Accessories
3.8/5
Packaging
4.1/5
Overall performance
4/5
Appearance
4.2/5
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
Purchased
6/4/26
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
Purchased
21/10/24
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
Purchased
19/4/26
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
Purchased
26/3/25
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
Purchased
26/1/25
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
Purchased
18/2/25
Reviewed 6/8/24, Australia.
Brought 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
128 GBStorage
AndroidOperating system
8 GBMemory (GB)
Samsung Galaxy SSerie
UnlockedCarrier compatibility
SM-G991Manufacturer version
Phantom WhiteColor (official name)
10 megapixelsFront camera
Dynamic AMOLED 2XScreen type
The Galaxy S21 5G is a flagship-level smartphone that was released in early 2021. It offers a balance of performance and features suitable for various users, from casual users to tech enthusiasts. This model comes with a sleek design and supports 5G connectivity, making it a versatile choice for everyday use.
Key features:The Galaxy S21 5G is well-suited for users who want a high-performance device with a vibrant display and advanced camera capabilities. It’s ideal for professionals, content creators, or anyone seeking a reliable 5G smartphone without the latest model’s premium price.
Pros & Cons:| Pros | Cons |
|---|---|
| Vivid display with high refresh rate for smooth visuals. | Non-expandable storage limits flexibility. |
| Powerful Snapdragon 888 or Exynos 2100 chipset. | Battery life varies depending on usage. |
Choosing a refurbished Galaxy S21 5G allows you to access a high-quality device at a more affordable price. Each device undergoes thorough testing and refurbishment to meet Back Market’s quality standards, ensuring reliability and performance. Learn more about our quality standards.

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