Free delivery by 1 - 2 July
Express shipping by 30 June - 1 July from A$8.00
United States
English (US)
All guaranteed 100% functional








Compatible charging cable
Battery
4.3/5
Shipping
4.5/5
Lens & Camera
4.5/5
Accessories
4/5
Packaging
4.5/5
Overall performance
4.5/5
Appearance
4.4/5
Reviewed 23/1/25, Australia.
I'm happy the phone condition is as described and everything seems to work well. I didn't expect it to be an American model and heard it can affect 5G connection it seems good so far though so hopefully doesn't pose any issues
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Fair
Purchased
8/1/25
Reviewed 27/11/24, Australia.
Good value for money. Love that the phones are repurposed. They are great phones. I had to buy a better charger but that was no problem. The phone shop were amazed at the bargain I got for my Samsung. Keep up the good work Back Market!
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Good
Purchased
26/9/24
Reviewed 29/5/25, Australia.
Hello. Firstly, I'm 65 years old which means I'm from the pre-mobile phone generation. I decided to buy this phone to replace my Nokia 2.3 ( which was not functioning properly.) This new phone improves on it in every way. The screen resolution is much better, the display is easier to see in sunlight etc. etc. I opted for the premium version and the phone looks just like a brand new one. I'm very happy with my purchase and would recommend this phone. Thank you.
Galaxy S21+ 5G 256GB - Silver - Unlocked
Galaxy S21+ 5G 256GB - Silver - Unlocked
Condition
Premium
Purchased
7/5/25
Reviewed 29/11/24, Australia.
Item was as per advertised. I didn't realise it was an ex AT&T phone so it has there apps on it that cannot be uninstalled. Regardless, the phone works, is in good condition, and is unlocked for use in Australia
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Excellent
Purchased
3/11/24
Reviewed 6/1/26, Australia.
I bought a Excellent condition Samsung S21+. When it arrived the screen had a few prominent scratches on the screen plus alot of other minor scratches only to be told i had been sent a fair condition phone. Yes i could of sent it back but you didnt have what i wanted in stock. I was offered a $40 refund which i took but considering the phone i bought was $380 and Fair was only $308 maybe the refund should of been a little bit more and i did ask.The process to contact was smooth and easy. The person was very helpful. Just be careful with what is being sent
Galaxy S21+ 5G 128GB - Purple - Unlocked
Galaxy S21+ 5G 128GB - Purple - Unlocked
Condition
Excellent
Purchased
22/12/25
Reviewed 13/11/24, Australia.
I bought 2 of these, one for myself and one for my wife. I grabbed one randomly and had little trouble setting it up apart from some difficulty changing the temp from F to C. Someone else set up my wife's phone, and later she complained of all the unknown contacts on it. I had to do the factory reset you should have done.
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Good
Purchased
30/9/24
Reviewed 16/2/26, Australia.
RcvD Earlier than expected well done very impressed condition of phone exactly as promoted and selected very plsd with purchase duly recommended
Galaxy S21+ 5G 128GB - Silver - Unlocked
Galaxy S21+ 5G 128GB - Silver - Unlocked
Condition
Excellent
Purchased
26/1/26
1080 x 2400Resolution
NoCard slot
SM-G996BManufacturer version
NoFoldable
12 megapixelsMain camera
8 GBMemory (GB)
SamsungBrand
Galaxy S21+ 5GModel
Phantom RedColor (official name)
The Galaxy S21+ 5G is a flagship-level smartphone that was released in early 2021. It features a large, vibrant display and supports 5G connectivity, making it suitable for users who want fast network speeds and a premium experience. This model is unlocked, offering flexibility for use with different carriers.
Key features:The Galaxy S21+ 5G is ideal for users seeking a high-performance device with a large, high-quality display. It suits professionals, multimedia enthusiasts, or anyone wanting a reliable, unlocked smartphone with 5G support.
Pros & Cons:| Pros | Cons |
|---|---|
| Large, vibrant display suitable for media consumption. | No headphone jack included. |
| Supports 5G connectivity for faster data speeds. | Battery capacity not specified, which may affect usage time. |
Opting for a refurbished Galaxy S21+ 5G offers a practical way to get a high-end device at a lower cost. Each device undergoes thorough testing and quality checks to ensure reliable performance. Back Market’s commitment to quality is backed by our Quality Standards.

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