GSM Phones Refurbished (unlocked)

Name: Used & Refurbished Unlocked GSM Phones
Brand: Back Market
Price: 403 USD
Availability: InStock
Rating: 4.28 (243395 reviews)

Warranty: 12 months

Compare devices

192 products

Trade in to get it for less

Today’s purchase could set you back a lot less when you trade in an old device at the same time.

iPhone 15 • Unlocked

(2,181)

Starting at

Refurbished price:$403.00

Versus $729.00 new

+1 more colors

iPhone 14 • Unlocked

(4,190)

Starting at

Refurbished price:$286.00

Versus $629.00 new

+2 more colors

iPhone 12 • Unlocked

(9,476)

Starting at

Refurbished price:$176.54

Versus $629.00 new

+2 more colors

iPhone 15 Plus • Unlocked

(1,287)

Starting at

Refurbished price:$409.99

Versus $829.00 new

+1 more colors

iPhone 16 • Unlocked

(486)

Starting at

Refurbished price:$542.00

Versus $729.00 new

+1 more colors

iPhone 16 Plus • Unlocked

(438)

Starting at

Refurbished price:$538.00

Versus $829.00 new

+1 more colors

iPhone 14 Pro Max • Unlocked

(1,661)

Starting at

Refurbished price:$479.00

Versus $1,099.00 new

iPhone 13 • Unlocked

(5,837)

Starting at

Refurbished price:$241.00

Versus $629.00 new

+2 more colors

iPhone 15 Pro • Unlocked

(1,662)

Starting at

Refurbished price:$557.00

Versus $999.00 new

iPhone 16 Pro • Unlocked

(607)

Starting at

Refurbished price:$695.52

Versus $999.00 new

iPhone 16 Pro Max • Unlocked

(550)

Starting at

Refurbished price:$792.70

Versus $1,199.00 new

iPhone 17 • Unlocked

(131)

Starting at

Refurbished price:$764.00

Versus $829.00 new

+1 more colors

iPhone 15 Pro Max • Unlocked

(1,367)

Starting at

Refurbished price:$675.00

Versus $1,199.00 new

Galaxy S23 Ultra • Unlocked

(1,161)

Starting at

Refurbished price:$389.99

Versus $1,199.99 new

+4 more colors

iPhone 16e • Unlocked

(583)

Starting at

Refurbished price:$373.00

Versus $599.00 new

iPhone 14 Plus • Unlocked

(1,784)

Starting at

Refurbished price:$314.00

Versus $729.00 new

+2 more colors

iPhone 17 Pro Max • Unlocked

(91)

Starting at

Refurbished price:$1,283.00

Versus $1,399.00 new

iPhone 11 • Unlocked

(9,796)

Starting at

Refurbished price:$161.00

Versus $499.00 new

+2 more colors

iPhone SE (2022) • Unlocked

(1,868)

Starting at

Refurbished price:$130.00

Versus $429.00 new

Galaxy S22 5G • Unlocked

(1,764)

Starting at

Refurbished price:$147.99

Versus $579.00 new

+5 more colors

Galaxy S22+ 5G • Unlocked

(1,172)

Starting at

Refurbished price:$159.99

Versus $999.00 new

+4 more colors

iPhone 13 Pro • Unlocked

(2,491)

Starting at

Refurbished price:$357.00

Versus $1,000.00 new

+1 more colors

Going fast

Galaxy S25 Ultra • Unlocked

(249)

Starting at

Refurbished price:$676.00

Versus $1,299.00 new

+3 more colors

Galaxy S24 • Unlocked

(489)

Starting at

Refurbished price:$331.00

Versus $766.00 new

+3 more colors

iPhone SE (2020) • Unlocked

(6,123)

Starting at

Refurbished price:$101.00

Versus $399.00 new

Staff pick

Galaxy S24 Ultra • Unlocked

(747)

Starting at

Refurbished price:$539.00

Versus $1,399.00 new

+3 more colors

iPhone 14 Pro • Unlocked

(1,864)

Starting at

Refurbished price:$408.00

Versus $999.00 new

iPhone 17 Pro • Unlocked

(54)

Starting at

Refurbished price:$1,138.00

Versus $1,299.00 new

Galaxy Z Flip5 • Unlocked

(386)

Starting at

Refurbished price:$249.99

Versus $1,147.99 new

+2 more colors

iPhone 13 mini • Unlocked

(2,334)

Starting at

Refurbished price:$213.00

Versus $629.00 new

+2 more colors

Galaxy S22 Ultra 5G • Unlocked

(2,066)

Starting at

Refurbished price:$279.99

Versus $899.00 new

+3 more colors

iPhones

What's The Difference Between A Locked And Unlocked iPhone? | Back Market

Find out the difference between a locked vs unlocked iPhone here. Learn what a locked phone is, how to unlock an iPhone, and any disadvantages of buying an unlocked phone.

Customer reviews for GSM Phones Refurbished (unlocked)

Overall rating

243,395 verified reviews

Rating details

Accessories
4.2/5
Appearance
4.4/5
Battery
4.2/5
Lens & Camera
4.5/5
Overall performance
4.2/5
Packaging
4.5/5
Shipping
4.5/5

Reviews

Bd C.
Verified purchase
Reviewed 4/15/26, United States.
I am profoundly grateful to have received my Samsung Galaxy A42 5G 128GB in Black, arriving in pristine condition—its screen unmarred, battery fully optimized, casing immaculate, and all ports, buttons, and camera lenses functioning flawlessly upon meticulous inspection. Back Market’s exemplary customer support representatives, Anna and Kat, resolved every concern with unparalleled care and attentiveness, particularly as a disabled customer deserving of such tailored service. It is earnestly hoped that Back Market will offer protective phone covers tailored for refurbished devices.
Galaxy A42 5G 128GB - Black - Unlocked
Galaxy A42 5G 128GB - Black - Unlocked
See item
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
4/3/26
Tadeusz T.
Verified purchase
Reviewed 5/10/26, United States.
I’m extremely happy with this refurbished iPhone 13 Mini. The phone arrived quickly, was packaged well, and honestly looks and works like brand new. Excellent quality, smooth setup, and great customer service throughout the process. Definitely exceeded my expectations - highly recommended!
iPhone 13 mini 128GB - Midnight - Unlocked
iPhone 13 mini 128GB - Midnight - Unlocked
See item
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
4/26/26
Megan M.
Verified purchase
Reviewed 4/26/26, United States.
recently purchased an iPhone 14 from Back Market, and I’m honestly really impressed with the experience. I was a bit skeptical about buying a refurbished phone at first, but it exceeded my expectations. The phone arrived quickly and was in excellent condition—honestly, it looked almost brand new. There were little to no visible scratches, and everything worked perfectly right out of the box. The battery life has been solid, and performance is just as smooth and fast as you’d expect from an iPhone 14. What I appreciated most was the value for money. I was able to get a high-quality device at a much lower price than buying brand new, which made it totally worth it. The setup process was easy, and I haven’t had any issues with connectivity, camera quality, or apps. Overall, I’d definitely recommend buying from Back Market if you’re looking to save money without sacrificing quality. This was a great purchase, and I’d do it again.
iPhone 14 128GB - Midnight - Unlocked
iPhone 14 128GB - Midnight - Unlocked
See item
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
4/13/26
Sean G.
Verified purchase
Reviewed 1/31/26, United States.
I love my new iPhone 15 Pro Max and am amazed with the quality- it arrived in perfect condition. Looks like a brand new phone with no scratches or damage and has a battery health of 84%. I was initially looking for refurbished phones on Apple’s certified refurbished site and they have this same model (1TB storage) listed for around $1300 after taxes. Save your money and go with BackMarket!
iPhone 15 Pro Max 1000GB - White Titanium - Unlocked
iPhone 15 Pro Max 1000GB - White Titanium - Unlocked
See item
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
1/28/26
Linda S.
Verified purchase
Reviewed 1/4/26, United States.
I am very impressed with the Google pixel I bought from Back Market. The Google pixel 32 GB was the first cell phone I ever owned. Being slippery, I have gone through a number of them, but I still cannot find another phone with a better camera than this older phone. So I always keep a Google Pixel even if I don't use it as a phone, nothing can compare to the camera it has. I had just broken my last one and wasn't sure I would be able to find this phone again. I wasn't sure what I would get because this phone was refurbished, but I didn't think I had a choice. This phone actually has a better camera than the pixel I just broke. Well done, Back Market.
Google Pixel 32GB - Black - Unlocked
Google Pixel 32GB - Black - Unlocked
See item
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
12/20/25
Saed A.
Verified purchase
Reviewed 2/25/26, United States.
I was initially hesitant about buying a refurbished iPhone 16 Pro (512GB), after seeing mixed reviews online, then i figured buying a new one might be better. However, I decided to go with Back Market’s 'Premium' tier, and honestly I am blown away! The phone arrived in literal 'like-new' condition, zero battery cycles and 100% battery health!! Thank you BackMarket for the honest service and for exceeding my expectations. I highly recommend Backmarket if you're looking for quality without the brand-new price tag
iPhone 16 Pro 512GB - Black Titanium - Unlocked
iPhone 16 Pro 512GB - Black Titanium - Unlocked
See item
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
2/3/26
Justyn H.
Verified purchase
Reviewed 3/22/26, United States.
Absolutely amazing, I was very skeptical about buying from this website. I DO NOT regret it. Phone came with 87% battery life (very very good) especially for a refurbished phone. I will be buying another iPhone from them! Also real quick, when I opened the package and inspected the phone, it was in really good condition. No scratches or dents. Looked brand NEW! Thank you so much for the pristine iPhone 15 plus !!!!!!
iPhone 15 Plus 512GB - Pink - Unlocked
iPhone 15 Plus 512GB - Pink - Unlocked
See item
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
3/12/26
Alicia L.
Verified purchase
Reviewed 4/28/26, United States.
So happy to have a 13 mini back. Same GB’s and even same color as I’d had before. It was a mistake to try the iPhone 17; too big and too heavy. Researched reliable refurbished iPhones, and Back Market came up as one. As recommended, I also checked out the individual vendor’s reviews; good as well, with years of experience. Ordering was easy; arrived on date stated, and the battery at 92%, with (I think) an Apple battery, because I didn’t get the warning about a non-Apple part (they stated may happen with non-Apple battery) upon turning it on. Battery lasts about 4.5 hours, way less than the 17 which lasts all day. However, I recalled that pretty much is standard with the 13 mini. It simply does not have the battery power of the bigger phones. I expected it to get a bit warm while transferring my data from the 17, yet it never got hot. My phone plan immediately recognized the 13 mini without me having to do anything on their site. I’ve had it about 2 weeks now; and so far, so good.
iPhone 13 mini 512GB - Pink - Unlocked
iPhone 13 mini 512GB - Pink - Unlocked
See item
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
4/16/26
Rubik M.
Verified purchase
Reviewed 4/20/26, United States.
It is a literal brand new phone. Came with original Apple charger and original Apple SIM card remover and Apple papers and sticker. Battery health 100%. Would highly recommend BEST4TECH as a seller. It’s as good as Apple refurbished.
iPhone 13 Pro Max 128GB - Graphite - Unlocked
iPhone 13 Pro Max 128GB - Graphite - Unlocked
See item
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
4/6/26
Claire W.
Verified purchase
Reviewed 11/29/25, United States.
This is the second phone I’ve ordered from backmarket, I recommend them to EVERYONE! Not only are they reducing waste, but you can’t beat their prices either!! I ordered the iPhone 12 mini in “fair” condition, and it showed up looking brand new with only a few teeny scratches on the body! For $150 you seriously can’t beat it. I’ve never had issues with the longevity of their refurbished phones, my previous one lasted almost 5 years. The battery capacity on this one is 80% and it has no problem getting through the whole day off a full charge. Everything works like it’s supposed to with zero issues! I love this company, I love this phone, and I could NOT be happier :)
iPhone 12 mini 64GB - Red - Unlocked
iPhone 12 mini 64GB - Red - Unlocked
See item
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
11/13/25

Read our guides

Our recent comparisons

Searches so popular you can't sit with them

Mother's Day Google Pixel Father's Day Pink iPhone Galaxy Note10 Plus Samsung Galaxy Game of Phones iPhone 13 Colors Black Friday iPhone 4

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!

Choose location

Suggested searches

Popular searches

GSM Phones Refurbished (unlocked)

Trade in to get it for less

What's The Difference Between A Locked And Unlocked iPhone? | Back Market

Reviews

Bd C.

Tadeusz T.

Megan M.

Sean G.

Linda S.

Saed A.

Justyn H.

Alicia L.

Rubik M.

Claire W.

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

What's the Best Place to Get an Unlocked iPhone? | Back Market

iPhone SE 4 release: Is Apple’s latest phone drop worth the hype? | Back Market

What is a refurbished iPhone? Know before you buy | Back Market

MacBook Neo review | Back Market

How to Activate My Phone | Back Market

iPhone 15 Pro Max • Unlocked vs iPhone 16 Pro Max • Unlocked comparison

iPhone 15 • Unlocked vs iPhone 15 Pro • Unlocked comparison

iPhone 15 • Unlocked vs iPhone 16 • Unlocked comparison

iPhone 16 • Unlocked vs iPhone 16 Plus • Unlocked comparison

iPhone 11 • Unlocked vs iPhone 12 Pro Max • Unlocked comparison