GSM Phones Refurbished (unlocked)

Name: Used & Refurbished Unlocked GSM Phones
Brand: Back Market
Price: 275 USD
Availability: InStock
Rating: 4.29 (253504 reviews)

Warranty: 12 months

158 products

Free 1-year warranty included

Device repair or replacement on us for all devices.

Express Replacement for free.

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iPhone 14 • Unlocked

(4,891)

Starting at

Refurbished price:$275.00

Versus $629.00 new

+2 more colors

iPhone 15 Plus • Unlocked

(1,680)

Starting at

Refurbished price:$395.00

Versus $829.00 new

+1 more colors

iPhone 16 Plus • Unlocked

(589)

Starting at

Refurbished price:$596.00

Versus $829.00 new

+1 more colors

iPhone 16 • Unlocked

(699)

Starting at

Refurbished price:$538.00

Versus $729.00 new

+1 more colors

iPhone 15 • Unlocked

(2,744)

Starting at

Refurbished price:$394.00

Versus $729.00 new

+1 more colors

iPhone 17e • Unlocked

(58)

Starting at

Refurbished price:$606.98

Versus $699.00 new

Motorola Moto G (2025) • Unlocked

(70)

Starting at

Refurbished price:$164.00

Versus $399.00 new

Motorola Razr Ultra 2025 • Unlocked

(4)

Starting at

Refurbished price:$582.00

Versus $1,100.00 new

Motorola razr 2025 • Unlocked

(11)

Starting at

Refurbished price:$414.00

Versus $489.00 new

OnePlus Open • Unlocked

(28)

Starting at

Refurbished price:$879.00

Versus $1,419.00 new

Motorola razr 2024 • Unlocked

(33)

Starting at

Refurbished price:$425.00

Versus $699.99 new

OnePlus 12 • Unlocked

(82)

Starting at

Refurbished price:$705.00

Versus $1,200.00 new

OnePlus 13 • Unlocked

(21)

Starting at

Refurbished price:$726.00

Versus $999.99 new

Galaxy S23 Ultra • Unlocked

(1,376)

Starting at

Refurbished price:$378.74

Versus $1,199.99 new

+4 more colors

Galaxy S25 Ultra • Unlocked

(444)

Starting at

Refurbished price:$656.49

Versus $1,299.00 new

+3 more colors

iPhone 17 Pro • Unlocked

(118)

Starting at

Refurbished price:$986.00

Versus $1,099.00 new

iPhone 17 Pro Max • Unlocked

(174)

Starting at

Refurbished price:$1,074.00

Versus $1,199.00 new

Galaxy S24 Ultra • Unlocked

(931)

Starting at

Refurbished price:$530.24

Versus $1,399.00 new

+3 more colors

iPhone 17 • Unlocked

(259)

Starting at

Refurbished price:$700.00

Versus $929.00 new

+1 more colors

Google Pixel 8 Pro • Unlocked

(383)

Starting at

Refurbished price:$346.00

Versus $915.99 new

Google Pixel 9 Pro XL • Unlocked

(149)

Starting at

Refurbished price:$518.00

Versus $1,199.99 new

Google Pixel 10 Pro XL • Unlocked

(91)

Starting at

Refurbished price:$620.00

Versus $1,319.00 new

iPhone 16 Pro • Unlocked

(817)

Starting at

Refurbished price:$619.34

Versus $999.00 new

Galaxy S23 • Unlocked

(1,261)

Starting at

Refurbished price:$222.19

Versus $799.99 new

+2 more colors

Galaxy S22+ 5G • Unlocked

(1,336)

Starting at

Refurbished price:$176.74

Versus $999.00 new

+4 more colors

Galaxy S24 • Unlocked

(625)

Starting at

Refurbished price:$282.79

Versus $766.00 new

+3 more colors

Galaxy S23+ • Unlocked

(849)

Starting at

Refurbished price:$269.98

Versus $999.99 new

+2 more colors

Galaxy S24+ • Unlocked

(654)

Starting at

Refurbished price:$338.34

Versus $814.00 new

+3 more colors

Smart Essentials

Google Pixel 8 • Unlocked

(401)

Starting at

Refurbished price:$263.00

Versus $899.99 new

Smart Essentials

Google Pixel 8a • Unlocked

(165)

Starting at

Refurbished price:$254.00

Versus $899.99 new

Galaxy S22 Ultra 5G • Unlocked

(2,167)

Starting at

Refurbished price:$302.99

Versus $899.00 new

+3 more colors

News

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

What’s the difference between a locked and unlocked phone? We break it down to help you find the right phone for you.

Customer reviews for GSM Phones Refurbished (unlocked)

Overall rating

253,504 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

Jamarcuss J.
Verified purchase
Reviewed 7/31/26, United States.
Perfect condition and great experience! My daughter ordered an iPhone 13 from Back Market, and it arrived in perfect condition. The phone works flawlessly, and the entire buying process was smooth. We are highly satisfied and would definitely recommend Back Market for refurbished technology! Thank you 😊
iPhone 13 128GB - Midnight - Unlocked
iPhone 13 128GB - Midnight - Unlocked
See item
Condition
Good
Purchased
7/21/26
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
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
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
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
Purchased
1/28/26
Jada D.
Verified purchase
Reviewed 8/3/26, United States.
I was so anxious buying refurbished. There's plenty of horror stories online about getting refurbished phones in awful condition and then having to deal with customer support from hell. But I needed a new phone and didn't want to contribute to the over-consumption we see every day from so many people. I saw the S24+ as my best option for price while still having many good years left of security updates from Samsung. When I first received it, I was worried, as I ordered it unlocked, but it came in a official Verizon refurbished box. But thankfully when I turned it on, it was unlocked as I purchased. The quality is amazing, there's genuinely no sign of it being used except for a couple extremely miniscule scratches on the screen. The actual phone itself is so good at multitasking, I can have so many apps running in the background without it getting slow or stuttering. I'm very happy with my purchase and will definitely look to buy from here again.
Galaxy S24+ 256GB - Purple - Unlocked
Galaxy S24+ 256GB - Purple - Unlocked
See item
Condition
Excellent
Purchased
7/23/26
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
Purchased
12/20/25
Bradley W.
Verified purchase
Reviewed 7/30/26, United States.
My original phone fell, resulting in damage to the screen and internal antenna. Decided to buy this iPhone 7 until the new 18 comes out in September. Out of the box, even for a Fair phone, it almost flawless unless you examined it really close up. They also included a USB-C to lightning cable. Battery life was also 100% and lasts me way more than a day. Even though it's an older phone, I'd say it was worth the money as a good back up.
iPhone 7 32GB - Black - Unlocked
iPhone 7 32GB - Black - Unlocked
See item
Condition
Fair
Purchased
7/17/26
Julio C.
Verified purchase
Reviewed 8/21/26, United States.
As it was put as “good” condition, it looked almost flawless. There was almost no scratches whatsoever and a good 99% of battery was on. Such a good refurbished phone, will be interested to buy another!
iPhone 16 Pro Max 256GB - Black Titanium - Unlocked
iPhone 16 Pro Max 256GB - Black Titanium - Unlocked
See item
Condition
Good
Purchased
8/18/26
Tyler P.
Verified purchase
Reviewed 7/22/26, United States.
Great phone so far...!!! I was a bit nervous that it wouldn't be refurbished with Samsung oem parts because my last 2 phones were supposed to have all oem parts, but when they came the screen was aftermarket... but this is truly oem! So thanks so much! Also, I absolutely love the camera... so much better than my s22 ultra. Takes up more space, but it's definitely worth it... has pretty good performance, the GPU can't quite render the graphics perfect on highest grapgics settings on Xplane, but still decent... could does great, and RAM is approximately 55-65% used all the time...( I do have 3 background apps running all the time) but still works great!!!
Galaxy S23 Ultra 512GB - Black - Unlocked
Galaxy S23 Ultra 512GB - Black - Unlocked
See item
Condition
Premium
Purchased
7/10/26

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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

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GSM Phones Refurbished (unlocked)

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

Reviews

Jamarcuss J.

Bd C.

Tadeusz T.

Megan M.

Sean G.

Jada D.

Linda S.

Bradley W.

Julio C.

Tyler P.

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