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Galaxy S21 5G - Unlocked

Refurbished Samsung Galaxy S21 5G

4.2/5
(1,025 reviews)
Starting at
$156.00before trade-in
$1,000.00 newSave $844.00
See options
  • 1-year warranty
  • Free standard shipping
  • Free 30-day returns
  • Friendly customer service

All Galaxy S21 options

This Black Friday, sell your old phone and rec...

38 products
Bestseller
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Gray

4.2/5
(1025)
Starting at
$156.00
$1,000.00 new
Bestseller
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Purple

4.2/5
(1028)
Starting at
$181.89
$799.00 new
Bestseller
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - White

4.2/5
(1028)
Starting at
$163.81
$799.99 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked256 GB - Gray

4.2/5
(1028)
Starting at
$198.54
$850.00 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Pink

4.2/5
(1024)
Starting at
$190.05
$799.00 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon128 GB - Gray

3.9/5
(10)
Starting at
$143.99
$799.00 new
Galaxy S21 5G - Locked T-Mobile

Galaxy S21 5G - Locked T-Mobile128 GB - Gray

4.1/5
(19)
Starting at
$152.00
$799.00 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T128 GB - Gray

5/5
(4)
Starting at
$139.99
$988.99 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Black

4.1/5
(1133)
Starting at
$219.00
$459.00 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon256 GB - Gray

3.9/5
(10)
Starting at
$224.44
$899.99 new
Galaxy S21 5G - Locked T-Mobile

Galaxy S21 5G - Locked T-Mobile128 GB - Pink

4.1/5
(19)
Starting at
$190.07
$799.00 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked256 GB - White

4.2/5
(1028)
Starting at
$542.00
$899.99 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked256 GB - Purple

4.2/5
(1014)
Starting at
$599.00
$799.00 new
Galaxy S21 5G - Locked T-Mobile

Galaxy S21 5G - Locked T-Mobile128 GB - White

4.1/5
(18)
Starting at
$161.68
$899.99 new
Galaxy S21 5G - Locked T-Mobile

Galaxy S21 5G - Locked T-Mobile256 GB - Gray

4.1/5
(18)
Starting at
$182.58
$849.00 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T128 GB - Purple

5/5
(4)
Starting at
$167.99
$799.00 new
Galaxy S21 5G - Locked T-Mobile

Galaxy S21 5G - Locked T-Mobile128 GB - Purple

4.1/5
(18)
Starting at
$169.28
$799.00 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T128 GB - White

Starting at
$181.82
$899.99 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon128 GB - White

3.9/5
(10)
Starting at
$181.82
$899.99 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon128 GB - Black

Starting at
$191.99
$412.04 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T128 GB - Black

4.8/5
(5)
Starting at
$191.99
$408.29 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon128 GB - Purple

3.9/5
(10)
Starting at
$194.00
$799.00 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon128 GB - Pink

3.9/5
(10)
Starting at
$194.46
$799.00 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T128 GB - Pink

4.8/5
(5)
Starting at
$213.34
$799.00 new
Galaxy S21 5G - Locked AT&T

Galaxy S21 5G - Locked AT&T256 GB - Gray

5/5
(4)
Starting at
$224.44
$849.00 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Purple

4.2/5
(1028)
Starting at
$443.30
$799.00 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - White

4.2/5
(1030)
Starting at
$444.00
$899.99 new
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked256 GB - Gray

4.2/5
(1015)
Starting at
$450.00
$899.99 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon256 GB - White

3.9/5
(10)
Starting at
$645.00
$899.99 new
Galaxy S21 5G - Locked Verizon

Galaxy S21 5G - Locked Verizon256 GB - Purple

Starting at
$650.00
$799.00 new

Refurbished Samsung Galaxy S21 5G's customer reviews

4.2/5

1,138 verified reviews in the last 12 months.

  • J

    Jakson B.

    Purchased on November 16, 2024

    5/5

    I recently purchased a refurbished Samsung Galaxy S21 from BackMarket, and I couldn't be happier with my experience. Here's a breakdown of my thoughts The phone arrived in excellent condition, just as described on the website. I opted for the "Excellent" grade, and true to its word, the device looked almost brand-new. There were no noticeable scratches or signs of wear, and the performance has been flawless so far. Pricing The pricing was very competitive compared to buying new or from other retailers. I saved a significant amount without sacrificing quality, which made it feel like a great deal. Shipping and Packaging The shipping was fast and efficient. The phone was securely packaged, ensuring it arrived in perfect condition. I appreciated the eco-friendly packaging, which aligns with BackMarket's commitment to sustainability. Performance The Samsung S21 is a fantastic phone with a vibrant display, excellent camera quality, and speedy performance. Thanks to BackMarket's thorough refurbishing process, the device operates like new. Overall Experience BackMarket provided a seamless buying experience. From the user-friendly website to the quality of the product, everything exceeded ...

    Reviewed in the United States on November 19, 2024

    Galaxy S21 5G 128GB - Purple - Unlocked
  • D

    Daniel B.

    Purchased on August 2, 2024

    4.9/5

    Only a single small scratch along the top. Otherwise flawless, even without a case the scratch is barely visible, I was so afraid of buying anything here but I definitely will be looking for other products now, when I hear refurbished I usually see badly finished products. When back market refurbishes something it is flawless

    Reviewed in the United States on August 6, 2024

    Galaxy S21 5G 128GB - Gray - Unlocked
  • S

    Scott K.

    Purchased on April 16, 2024

    4.5/5

    I was skeptical About buying a refurbished model but everything turned out great.The phone is an awesome condition.And it came with a screensaver already on the phone. There was no problems in updating the phone or getting it programmed correctly.

    Reviewed in the United States on July 1, 2024

    Galaxy S21 5G 128GB - Gray - Unlocked
  • S

    Sabrina D.

    Purchased on March 25, 2024

    5/5

    Delivery was on time. The phone itself came with a screen protector already on. (that was so nice) It has one or two little scratches on it but that is to be expected because its refurbished. Honestly once you put a phone case on you cant see it anymore. All in all I would recommend backmarket to friends and family. I'm so happy I got my Andrew (android) back lol!

    Reviewed in the United States on July 1, 2024

    Galaxy S21 5G 128GB - Purple - Unlocked
  • T

    Tom Z.

    Purchased on February 24, 2024

    5/5

    I'm very pleased with the phone.l really enjoy not having to spend a lot of money on the latest and greatest products out there. To be able to buy a refurbished phone and have it perform as good as it does makes me happy.

    Reviewed in the United States on March 29, 2024

    Galaxy S21 5G 128GB - Gray - Unlocked
  • L

    Lilly R.

    Purchased on February 27, 2024

    5/5

    I have purchased from BackMarket before (back in 2021) and loved my S9+! I recently decided to upgrade to the S21 and, of course, knew that BackMarket would be my best option! This time around I decided to go with the, "Good" condition option (went with "Excellent" for my S9+) and I'm honestly very, very pleased. There are a few scuff marks on the back of the phone, and there's a slight scratch on the screen, though neither are very noticeable! All in all, I would (and do!) - highly- recommend buying refurbished, and buying refurbished from BackMarket at that!

    Reviewed in the United States on March 14, 2024

    Galaxy S21 5G 128GB - Purple - Unlocked
  • P

    Philip A.

    Purchased on February 7, 2024

    4.1/5

    I was encouraged by another customer review to just take the leap and buy one of the refurbished phones. There was some fear, but the phones arrived sooner than expected and in excellent shape. So the Back Market experience was positive, we're just not sure we love the phones yet - there are some things to get used to and it seems to want to update more than we would prefer. Hopefully things will improve, but so far I'm not convinced we made the right choice.

    Reviewed in the United States on February 18, 2024

    Galaxy S21 5G 128GB - Gray - Unlocked
  • S

    Steven T.

    Purchased on July 7, 2023

    5/5

    Great price for a great phone. A small scratch on the back is the only way you can tell its not a brand new phone. If you are skeptical about refurbished like I was, don't be. Even if something did go wrong there's a guarantee. I have bought two of these and both are great!I have not had a single issue. I will always buy refurbished from now on.

    Reviewed in the United States on January 15, 2024

    Galaxy S21 5G 128GB - Purple - Unlocked
  • J

    Justice chinonso E.

    Purchased on December 28, 2023

    4.9/5

    I would say that finding out about back market has been amazing to me. I got an S21G 5G Unlocked from Cellfeee (I chose excellent condition) and it has just been a free gift from cellfeee and back market. The phone was delivered sooner than it was proposed and the phone was really in excellent condition, I have searched to see a scratch on the phone but I haven't seen any. I have been enjoying for about 2 weeks now and there haven't been any issue, infact my phone looks brand new, people don't know that I got it as a refurbished product. I will certainly always by from back market as it just saved me hundreds of dollars and also I would always check out products from cellfeee as they have just proven their reputation to me. I got an amazing product with a token (with respect to quality of product). Thank you back market and also cellfeee for keeping your word. I will keep buying from you.

    Reviewed in the United States on January 25, 2024

    Galaxy S21 5G 128GB - Gray - Unlocked
  • K

    Krysti L.

    Purchased on January 2, 2023

    4.5/5

    The product was in perfect condition. So perfect that it was still locked to Verizon. I bought it as an unlocked phone, so I was surprised, and a little frustrated that I couldn't activate it because it wasn't compatible with my network or any of the other 5 networks that I tried. I finally discovered it would only work with Verizon. Verizon claims their phones are not locked, however, in an attempt to prevent theft, all of their products have to be used on a Verizon network for at least 6 weeks be for it's unlocked to any other network. I learned of this when I took the phone into Verizon to find out if it could be unlocked. I panicked because I feared they might think I had stolen it. Fortunately,Back Market provided easily accessed proof of purchase, and I was able to work with a multi-store manager when I went into my local Verizon store. After an hour of working on the issue I was having, he was able to trace the serial number and determined that this phone had most likely been returned due to a problem with the battery. It had then been legitimately sold to a person or company who refurbishes such products for resale. So I'm giving this experience 3 of 5 stars because...

    Reviewed in the United States on December 13, 2023

    Galaxy S21 5G 128GB - Phantom Gray - Unlocked
See all 1,138 reviews

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Benefits of buying a refurbished Samsung Galaxy S21


At Back Market, customers save big compared to the price of new on certified refurbished Samsung Galaxy S21 5G models. The best part is, you don't have to sacrifice performance quality in order to save money; all refurbished devices on our marketplace have been fully reconditioned, cleaned, inspected and tested to the same standards as a new one. This is the biggest difference between buying a used or pre-owned Samsung Galaxy S21 compared to a refurbished one.

Buying a renewed Samsung Galaxy S21 is also a much better option for the environment. A refurbished Samsung Galaxy S21 5G is often a second-hand device that has been restored and updated to meet the Samsung's manufacturer standards, which means you'll be helping to keep old Samsung Galaxy's out of our landfills, reduce electronic waste, and minimize your carbon footprint.

Samsung Galaxy S21 5G Review


Where to buy a refurbished Samsung Galaxy S21


You'll find the biggest selection, highest product quality and lowest prices on restored Samsung Galaxy S21 5G models at Back Market. That's because we specialize specifically in refurbished tech and take the time to carefully vet every seller on our marketplace to ensure customers are getting reliable devices that perform like-new. We have hundreds of refurbed Samsung Galaxy S21 5G phones in price ranges to fit almost anyone's smartphone budget.

Staying true to our brand, we're also a huge advocate for environmental change. In fact, at the beginning of 2023, we hit a milestone for preventing 1 million tons of carbon emission (CO2e) from entering the atmosphere. You can help contribute to a better circular economy when you shop Samsung Galaxy S21 deals on our platform.

Samsung Galaxy S21 5G warranty and return policy


All Samsung Galaxy S21 5G purchases on Back Market come with free standard shipping, a 1-year warranty, and a 30-day money-back guarantee. We want to make sure you can shop with confidence and find the best Samsung Galaxy for your needs at lower prices.

What to expect when buying a refurbished Samsung Galaxy S21 5G


If you're a first time refurbished buyer, you might not be sure what to expect from your purchase. First, understand that your Samsung Galaxy S21 may have external cosmetic flaws depending on the condition you choose (Back Market offers devices of Fair, Good and Excellent quality). However, whatever the condition, any external blemishes will not affect the performance of your Samsung Galaxy and you can expect your device to perform as if it were newly opened directly from the Samsung Store.

You should also be confident that your Samsung Galaxy S21 is backed by a 1-year warranty, meaning in the rare case that any defects arise (outside of accidental damage) within 12 months of your delivery date, then you're entitled to your choice of a repair, replacement or reimbursement.


Smartphone Trade In


If you already have a smartphone that you're looking to replace, consider trading it into Back Market to give you a little extra budget for your next smartphone upgrade. We make the process simple for you and we'll give you a free online quote when you answer a few easy questions about your current smartphone.

Trade in your smartphone

More Black Friday savings on smartphones

While you’re doing all your tech shopping this season, keep finding great deals on refurbished devices. Back Market has your back this Holiday season with a 1-year warranty, 30-day money-back guarantee and verified refurbished quality on Black Friday’s most popular phones:

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