Galaxy S21+ 5G • UnlockedBlack • 256 GB • Physical SIM + eSIM

(943 reviews)

$197.00

Save $803.00

Free delivery by Jun 10 - 11

Express delivery by Jun 9 - 10 from $15.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21+ 5G • Unlocked

Overall rating

943 verified reviews

Rating details

Battery
4.2/5
Shipping
4.6/5
Lens & Camera
4.5/5
Accessories
4.2/5
Packaging
4.5/5
Overall performance
4.3/5
Appearance
4.3/5

Reviews

Dan n. K.
Verified purchase
Reviewed 4/15/26, United States.
This phone was finally delivered in Kampala, Uganda in East Africa after many days of travel. The juiciest part is that the phones looks premium even when I ordered for a “good” condition, it’s just a good one. God bless.
Galaxy S21+ 5G 128GB - Purple - Unlocked
Galaxy S21+ 5G 128GB - Purple - 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
4/2/26
Matthew H.
Verified purchase
Reviewed 9/10/25, United States.
the phone and service of backmarket getting my order to me safely and accurate to the description has been phenomenal!! the phone is incredible, and everything has been simply perfect, NO COMPLAINTS HERE BABY!!
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
8/24/25
Corey D.
Verified purchase
Reviewed 12/8/24, United States.
Had an expert who is a friend thoroughly examine it and it is basically a new phone. All original parts with exception of the back cover to protect battery. He said it was the most gorgeous phone he has held and examined all 2024 probably. 10 gold stars out of 10.
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
11/24/24
Mallory H.
Verified purchase
Reviewed 11/4/25, United States.
I'm still setting my S21+ up/getting it set with my new network provider, but so far - SO GOOD! I love how the phone & new charging cable came safely wrapped for shipment! My entire experience in searching for, as well as purchasing, a new device with Back Market has been a positive one. I get a strong sense of professionalism from the website, the mobile app, those who refurbish & those who pack to ship. My new phone is even better than I thought it would be in appearance & I have been recommending Back Market to EVERYONE as I have been preparing to send the device I'm currently typing on, in for a trade-in reimbursement! THANK YOU TEAM!
Galaxy S21+ 5G 128GB - Silver - Unlocked
Galaxy S21+ 5G 128GB - Silver - 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
10/23/25
Thomas W.
Verified purchase
Reviewed 8/11/25, United States.
The phone is working fine, just like new--and the Samsung S21 is a good phone. The next time, though, I think I might go with a Good-rated phone rather than Fair-rated, as in this case. The phone has some markings around the edges, but that is a cosmetic issue, and has not affected the phone's performance. I continue to believe that BackMarket is an excellent online store for refurbished phones.
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
7/28/25
William Q.
Verified purchase
Reviewed 8/13/25, United States.
I bought this phone for my father, and it works perfectly fine. It did have some imperfections even though I did order Premium; it is refurbished so you can’t expect perfection. Overall great purchase. I will definitely be buying from BackMarket again.
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
7/25/25
Billy B.
Verified purchase
Reviewed 3/15/25, United States.
I love Back Market,It truly is a great place to shop for discounted refurbished electronics,I have purchased 3 smartphones from you all,And have been highly satisfied with all 3 of them,I plan on purchasing another phone next year,Thank you Back Market,I will continue to shop with you all for years to come,Keep up the good work
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - 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
2/26/25

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

Durability
Overall performance
Camera
Screen quality

SM-G996UZKEXAAMPN
NoFoldable
6.7Screen size (inches)
0.65SAR head
8 GBMemory (GB)
5GNetwork
USB-CConnector
BlackColor
YesLast OS Compatibility

The Galaxy S21+ 5G is a flagship-level smartphone that offers a balance of performance, large display, and versatile features. It is a 3rd generation device that remains suitable for users seeking a high-end Android experience with 5G connectivity.

Key features:

Display: 6.7-inch Dynamic AMOLED 2X, FHD+ resolution
Processor: Exynos 2100 (Global) or Snapdragon 888 (USA)
Camera: Triple rear cameras with 12MP wide, 12MP ultra-wide, and 64MP telephoto lenses
Storage: 256GB internal storage (non-expandable)
Connectivity: 5G capable for fast data speeds

Who is this for?

The Galaxy S21+ 5G is ideal for users who want a large, vibrant display for media consumption, photography enthusiasts, and those needing reliable performance for multitasking. It’s well-suited for professionals, tech-savvy users, and anyone looking for a premium Android device.

Pros & Cons: Pros Cons Large, high-quality display suitable for media and gaming No microSD slot for expandable storage Powerful processor for smooth multitasking Battery capacity not specified, which may affect usage duration
Why refurbished?

Opting for a refurbished Galaxy S21+ 5G provides a high-quality device at a more accessible price point. Each device undergoes thorough testing and quality checks to ensure reliable performance. Back Market’s refurbishment process adheres to strict standards, which you can learn more about here.

MPN: SM-G996UZKEXAA
Foldable: No
Screen size (inches): 6.7
SAR head: 0.65
Memory (GB): 8 GB
Network: 5G
Connector: USB-C
Color: Black
Last OS Compatibility: Yes
Resolution: 1080 x 2400
Front camera: 10 megapixels
OS: Android
Screen type: Dynamic AMOLED 2X
Manufacturer Ref.: SM-G996U1
Model: Galaxy S21+ 5G
Memory Card Slot: No
Release Year: 2021
Brand: Samsung
Serie: Samsung Galaxy S
Main camera: 12 megapixels
SAR body: 0.95
Color (official name): Phantom Black
Carrier compatibility: Unlocked
SIM card: Physical SIM + eSIM
Weight: 7 oz
Storage: 256 GB

Choose location

Suggested searches

Popular searches

Galaxy S21+ 5G • UnlockedBlack • 256 GB • Physical SIM + eSIM

Galaxy S21+ 5G • UnlockedBlack • 256 GB • Physical SIM + eSIM

Restored professionally

Comes with

Often bought together

Customer reviews for Galaxy S21+ 5G • Unlocked

Overall rating

Rating details

Reviews

Reviews

Dan n. K.

Matthew H.

Corey D.

Mallory H.

Thomas W.

William Q.

Billy B.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

Related articles

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

iPhone vs. Android: Which OS is Right for You? | Back Market

Can you use a Galaxy watch with an iPhone? | Back Market

Best smartwatch for Android: The only guide you need | Back Market

Android Phone Activation Guide | eSIM or SIM | Back Market

What’s the difference between a locked and unlocked phone? | Back Market

How to Activate My Phone | Back Market

Welcome to Back Market