• 1-year warranty
  • Free standard shipping
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GSM Phones Refurbished (unlocked)

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

1,427 products
Bestseller
iPhone 12 - Unlocked

iPhone 12 - Unlocked64 GB - Black

4.2/5
(3039)
Starting at
$229.02
$629.00 new
Bestseller
Galaxy S21 5G - Unlocked

Galaxy S21 5G - Unlocked128 GB - Gray

4.2/5
(1024)
Starting at
$149.00
$1,000.00 new
Bestseller
iPhone 13 - Unlocked

iPhone 13 - Unlocked128 GB - Midnight

4.3/5
(1777)
Starting at
$326.23
$629.00 new
iPhone SE (2020) - Unlocked

iPhone SE (2020) - Unlocked64 GB - Black

4.3/5
(745)
Starting at
$104.61
$399.00 new
iPhone 14 - Unlocked

iPhone 14 - Unlocked128 GB - Midnight

4.4/5
(626)
Starting at
$397.99
$629.00 new
iPhone 12 - Unlocked

iPhone 12 - Unlocked128 GB - Black

4.2/5
(3043)
Starting at
$251.30
$679.00 new
iPhone XR - Unlocked

iPhone XR - Unlocked64 GB - Black

4.2/5
(734)
Starting at
$139.34
$299.00 new
iPhone SE (2022) - Unlocked

iPhone SE (2022) - Unlocked64 GB - Midnight

4.4/5
(420)
Starting at
$152.76
$429.00 new
Galaxy S22 5G - Unlocked

Galaxy S22 5G - Unlocked128 GB - Black

4/5
(382)
Starting at
$207.49
$579.00 new
iPhone 12 - Unlocked

iPhone 12 - Unlocked64 GB - Blue

4.2/5
(3039)
Starting at
$226.99
$629.00 new
Galaxy S20 FE 5G - Unlocked

Galaxy S20 FE 5G - Unlocked128 GB - Dark Blue

4.2/5
(372)
Starting at
$141.72
$903.28 new
iPhone 12 - Unlocked

iPhone 12 - Unlocked128 GB - Blue

4.2/5
(3039)
Starting at
$249.13
$679.00 new
Galaxy S21 Ultra 5G - Unlocked

Galaxy S21 Ultra 5G - Unlocked128 GB - Black

4.2/5
(401)
Starting at
$230.04
$1,299.99 new
iPhone 13 - Unlocked

iPhone 13 - Unlocked128 GB - Blue

4.3/5
(1781)
Starting at
$324.64
$629.00 new
iPhone 14 Pro Max - Unlocked

iPhone 14 Pro Max - Unlocked256 GB - Space Black

4.3/5
(466)
Starting at
$618.84
$1,199.00 new
iPhone X - Unlocked

iPhone X - Unlocked256 GB - Space Gray

4.1/5
(294)
Starting at
$154.00
$599.00 new
iPhone 13 mini - Unlocked

iPhone 13 mini - Unlocked128 GB - Blue

4.1/5
(599)
Starting at
$287.77
$629.00 new
iPhone 11 - Unlocked

iPhone 11 - Unlocked128 GB - Black

4.2/5
(1756)
Starting at
$203.00
$549.00 new
Galaxy S22 Ultra 5G - Unlocked

Galaxy S22 Ultra 5G - Unlocked128 GB - Black

4.1/5
(605)
Starting at
$342.39
$899.00 new
iPhone 12 mini - Unlocked

iPhone 12 mini - Unlocked64 GB - Black

4/5
(952)
Starting at
$192.80
$459.00 new
iPhone 7 - Unlocked

iPhone 7 - Unlocked32 GB - Black

4.2/5
(135)
Starting at
$63.39
$179.00 new
iPhone 13 - Unlocked

iPhone 13 - Unlocked128 GB - Pink

4.3/5
(1777)
Starting at
$339.99
$629.00 new
iPhone 8 - Unlocked

iPhone 8 - Unlocked64 GB - Space Gray

4.3/5
(337)
Starting at
$97.95
$189.00 new
iPhone 14 Pro - Unlocked

iPhone 14 Pro - Unlocked128 GB - Space Black

4.4/5
(398)
Starting at
$501.99
$999.00 new
Galaxy S10e - Unlocked

Galaxy S10e - Unlocked128 GB - Black

4.4/5
(171)
Starting at
$129.00
$459.00 new
iPhone 12 Pro - Unlocked

iPhone 12 Pro - Unlocked128 GB - Graphite

4.2/5
(1061)
Starting at
$312.00
$799.00 new
iPhone 15 - Unlocked

iPhone 15 - Unlocked128 GB - Black

4.6/5
(255)
Starting at
$549.71
$729.00 new
iPhone 14 - Unlocked

iPhone 14 - Unlocked128 GB - Blue

4.4/5
(627)
Starting at
$400.00
$629.00 new
Galaxy S21+ 5G - Unlocked

Galaxy S21+ 5G - Unlocked128 GB - Black

4.3/5
(302)
Starting at
$181.00
$1,000.00 new

GSM Phones Refurbished (unlocked)'s customer reviews

4.2/5

30,980 verified reviews in the last 12 months.

  • T

    Tanish N.

    Purchased on September 26, 2024

    4.2/5

    I loved the product and its quality, also got the item delivered earlier than expected. It was very economical, as I got an iPhone 15 pro 512 GB for just $904, and that to in excellent condition. Also, I got Battery health at 100%, moreover phone still has an active Apple warranty. I am not sure if after refurbishing the phone it is still water resistant or not, and so I wouldn't risk it. The charging cable is not original and very small in length. Rest everything is awesome and I love it. I checked the Antutu and Geek bench benchmark scores, they were a little lower side from the actual score but I guess that is due to the low charging and background applications.

    Reviewed in the United States on October 4, 2024

    iPhone 15 Pro 512GB - Natural Titanium - Unlocked - Dual eSIM
  • C

    Chris M.

    Purchased on September 17, 2024

    5/5

    Very happy with my first Black Market purchase! I picked the iPhone 13 in Excellent condition and the phone came in 2 days in perfect condition with 98% battery health. I saved so much money getting the refurbished iPhone from Black Market instead of getting a new one from Apple, this is how I will be getting all my new phones from now on.

    Reviewed in the United States on September 20, 2024

    iPhone 13 128GB - Midnight - Unlocked
  • B

    Benson E.

    Purchased on May 31, 2024

    4.4/5

    Overall happy with the value of my iphone 13 pro purchase. I’m always about saving money. Upgraded from my iphone 11 because it started acting up (i believe due to Apple’s programmed demises of older models). I selected the “excellent” quality of this refurbished phone and I will say i was surprised at how scratched up the perimeter (sides, top, and bottom) of the phone was. Thankfully the screen and back panel of the phone were essentially blemish-free, which i cared about more. I just put a clear case on the phone so you cant see the scratched perimeter so it’s all good. Getting a “discount” in the form of trading in my previous iphone 11 is also pleasant. Would def recommend Back Market.

    Reviewed in the United States on July 1, 2024

    iPhone 13 Pro 256GB - Sierra Blue - Unlocked
  • J

    Jose C.

    Purchased on April 21, 2024

    4.4/5

    Easy, fast shipping. I was overall happy with the way the iPhone 13 I purchased in "Good" condition arrived, phone battery was 87% and the body was also good with only a few scuffs around the edges (nothing that a case will hide). I'd have been a bit disappointed about the screen, it has apparently been replaced for a non genuine display and my phone is indicating “An important display message - Unable to verify this iPhone has a genuine apple display". I had to remember that this was a refurbished phone and I couldn't notice any difference in image quality, except for that annoying notification in the settings the iPhone works as expected.

    Reviewed in the United States on July 1, 2024

    iPhone 13 256GB - Blue - Unlocked
  • G

    Gloria R.

    Purchased on March 7, 2024

    5/5

    I was nervous to buy a refurbished iPhone anywhere other than through Apple but the iPhone 13 mini was never available at the Apple Refurbished store, so after looking around I felt the most confident purchasing through Back Market. The 13 mini I purchased arrived a couple of days early and I received notifications when it was going to be delivered so I'd be there to sign for it and the driver did require a signature. The phone was exactly what I'd hoped for and now I feel a little silly being so worried about it. I will buy from Back Market again.

    Reviewed in the United States on March 25, 2024

    iPhone 13 mini 256GB - Starlight - Unlocked
  • M

    Michael V.

    Purchased on February 12, 2024

    5/5

    Great phone with no complaints so far. . My wife cracked her screen on her iPhone 11 and the cost to repair it properly through Apple was the same price as trading it in and buying this refurbished iPhone 12.

    Reviewed in the United States on February 25, 2024

    iPhone 12 128GB - Black - Unlocked
  • A

    Angela M.

    Purchased on January 24, 2024

    5/5

    I am really happy with my phone (OnePlus 10 Pro) and my experience using Back Market. My phone was shipped quickly and arrived within a week of ordering it. I can't tell it is even refurbished or that it is not new. It looks new and operates lightning fast. It was packaged professionally and has had not a single issue so far (it's been a few weeks). Thanks for everything!

    Reviewed in the United States on February 14, 2024

    OnePlus 10 Pro 128GB - Black - Unlocked
  • I

    Ian E.

    Purchased on January 29, 2024

    4.8/5

    I'm very satisfied with Backmarket and with the refurbishers responsible for my Oneplus 10 Pro. Ordered mine in excellent condition and there isn't a scratch on it any where. Great price. Looks and feels brand new. Only downside is they don't come with the original charger, just a cord which is fine. Just keep in mind if you buy one on here you'll need to get the official Warp Charger and OnePlus cord elsewhere. Overall 10/10 experience, will be using BackMarket again. Thank you to TheGeex and to BackMarket.

    Reviewed in the United States on February 4, 2024

    OnePlus 10 Pro 128GB - Black - Unlocked
  • J

    Jamie P.

    Purchased on January 15, 2024

    4.2/5

    The microphone cuts out a lot while another person Is talking on speakerphone, or if they are streaming on discord etc, everything else with the phone seems great, the screen looks more colorful less orange like my iPhone XS I got a good condition, with a new battery so the battery is new. Both cameras look good, there is a small scratch on the back of the phone but that was listed for good condition so I don’t care much it’s on the back, the front of the phone is good no scratches the sides had no scratches the cameras no scratches, I do have a screen error but that’s bc it was replace most likely, when I do press on the screen you can tell it’s not genuine apple which is whatever (looks better anyways) I’m not tryna be picky but realistic for you guys who will read my review and you decide you want to buy this, it does seem like the iPhone 11 has microphone issues in general so it’s probably just apple in that case not the refurbisher fault, volume is loud and good sounds great, the down volume button is super sensitive though like it does at click like the up button does

    Reviewed in the United States on January 18, 2024

    iPhone 11 64GB - Black - Unlocked
  • R

    Rito S.

    Purchased on December 28, 2023

    4.6/5

    I'm very impressed with Back Market refurbished products. For the most part, they're reasonably priced. I was able to get a Samsung galaxy s23 for half the price of a brand new one. The phone was cosmetically and functionally in very good condition. I was very surprised. What got my attention about Back Market though is that they are B Corp Certified. That was enough for me to purchase from them.

    Reviewed in the United States on January 10, 2024

    Galaxy S23 128GB - Purple - Unlocked
See all 30,980 reviews

Searches so popular you can't sit with them

What's the best place to get a GSM unlocked phone?

We believe that Back Market is the best place to get an unlocked GSM phone because our phones are much cheaper than newer editions, yet still have the same quality that you can expect out of the box.

What does it mean if a phone is unlocked for GSM networks?

It's actually pretty simple, since T-Mobile and AT&T use GSM technology to transmit their cell signals, phones that are able to work with both of these carriers are often called GSM unlocked phones. It's also important to mention that GSM unlocked phones are likely to work on foreign carriers, since most international cell providers also use GSM technology to transmit their cell frequencies.

The Best Deals on Unlocked GSM Phones

We don't mean to brag, but we feel we have some of the best deals on unlocked GSM cell phones. Why do we feel this way? Because our phones have been refurbished, they are just a hair more expensive than regular used phones, but come with the same quality as new devices. Pretty cool, huh?

Unlocked GSM smartphones for sale

Be on the lookout for special events and pay attention to the top featured product on each of our categories, these are most often the best deal according to our algorithm!

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: