• 1-year warranty
  • Free standard shipping
  • Free 30-day returns
  • Friendly customer service

GSM Phones Refurbished (unlocked)

Warranty: 12 months

1,144 products

iPhone 14 • UnlockedMidnight • 128 GB • eSIM

(1808)
$324.00
$629.00 new

iPhone 15 • UnlockedBlack • 128 GB • eSIM

(667)
$510.00
$729.00 new

iPhone 14 • UnlockedBlue • 128 GB • eSIM

(1802)
$319.45
$629.00 new

iPhone 14 • UnlockedPurple • 128 GB • eSIM

(1804)
$314.00
$629.00 new

iPhone 14 Pro • UnlockedDeep Purple • 128 GB • eSIM

(1037)
$480.99
$999.00 new

iPhone 14 Plus • UnlockedMidnight • 128 GB • eSIM

(857)
$373.99
$729.00 new

iPhone 14 • UnlockedStarlight • 128 GB • eSIM

(1801)
$338.99
$629.00 new

iPhone 14 Pro • UnlockedSpace Black • 128 GB • eSIM

(1038)
$479.00
$999.00 new
Find out the difference between locked and unlocked iPhones
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.

GSM Phones Refurbished (unlocked)'s customer reviews

62,691 verified reviews in the last 24 months.

  • S

    Sam M.

    Purchased on May 15, 2025

    Verified purchase

    I got a great deal on getting a Google pixel 7. Though sometimes the touch screen is unresponsive, I don't know if that's a typical issue for Google pixels or if it's an issue from an improper refurbishment. I'm thinking about filing for a return/repair/replace. Otherwise I'm satisfied

    Reviewed in the United States on June 2, 2025

    Google Pixel 7 128GB - Black - Unlocked
  • M

    Matt P.

    Purchased on April 12, 2025

    Verified purchase

    I was looking for the best deal on an iPhone 15 Pro with 256GB of storage and was so happy to find Back Market! I got the unlocked fully refurbished version and its in really good condition. Really couldn't be happier with the purchase and happy to have picked up what seems like the last great iPhone apple made.

    Reviewed in the United States on April 29, 2025

    iPhone 15 Pro 256GB - Black Titanium - Unlocked
  • A

    Anand S.

    Purchased on March 4, 2025

    Verified purchase

    I recently purchased a Samsung Galaxy A05 from Back Market, and I couldn’t be happier with my experience. The device arrived in great condition, looking clean and well-maintained. Despite being a refurbished phone, it feels just like new no noticeable scratches or defects. I was particularly impressed with Back Market's service the phone was well-packaged, arrived on time, and worked flawlessly right out of the box.

    Reviewed in the United States on March 19, 2025

    Galaxy A05 64GB - Black - Unlocked
  • E

    Elizabeth S.

    Purchased on March 15, 2025

    Verified purchase

    This was my first purchase from Back Market and I've got to say, I am beyond impressed and pleased with my phone! I was so hesitant and nervous spending so much money on a refurbished phone, and on top of that, using this website because I had never heard of it... but my phone came in almost perfect condition and has been so awesome! I got the Samsung Galaxy S23 Ultra at "good" condition, and 3 weeks into it, this has been the best phone I've ever owned! The battery lasts all day, the screen and camera are so clear, and it's been fast and efficient with everything so far. I couldn't be happier with this phone so far! I am so glad I stumbled across Back Market!

    Reviewed in the United States on April 2, 2025

    Galaxy S23 Ultra 256GB - Black - Unlocked
  • J

    J. scott B.

    Purchased on March 6, 2025

    Verified purchase

    Thank you Back Market, for your service as the go between service for connecting buyers and refurbishers of various products. This was my first experience of both purchasing a refurbished iPhone, and trading in my previous iPhone, from other than Apple direct. I did my research first to be sure of how I could ensure the best outcome, and this is my advice to others: Purchase a refurbished iPhone described as no less than “Excellent” condition. It may cost you a little more than lesser condition described refurbished iPhones, but you likely will be more satisfied with the condition of the device you receive. I wanted to trade in my excellent condition iPhone XR and purchase an iPhone 13 Mini 256GB in color green. I was unable to acquire the iPhone 13 Mini 256GB in green as neither new nor refurbished direct from Apple. So I had to look elsewhere. That is where Back Market came in. I really like the fact that Back Market gives a 30 day return policy in case you are not happy with the item you receive, and an automatic 1 year warranty for issues beyond the first 30 days. I’m very happy with both the purchase and trade-in experiences. Just FYI: Each transaction, the purcha...

    Reviewed in the United States on March 31, 2025

    iPhone 13 mini 256GB - Green - Unlocked
  • T

    Theresa L.

    Purchased on February 20, 2025

    Verified purchase

    I bought my first refurbished IPhone with Backmarket in 2019 - an IPhone 7. I got it in the "excellent" condition and it was excellent for 5 years! I loved my IPhone 7 and the only reason I gave it up was because the IOS would only go to 14 and some of my needed apps did not support IOS 14 anymore. So with a great deal of research, including articles on BackMarket, I decided on an IPhone 13, again in "excellent" condition, trading in my old Iphone 7. Trade-in super easy - was given a trade-in price within seconds, free shipping, constant communication, and $ within my bank account all within a week. As for my IPhone 13 - Apple has made copying from old phone to new phone a breeze (not like the old days with needing to backup and copy from ICloud). The Iphone 13 came well packaged and yes, in excellent condition. Beautiful phone. I highly recommend BackMarket to anyone looking at getting a "new" phone. Website so easy to navigate, great customer service and clear communication, AND most important, doing something nice for our cherished planet.

    Reviewed in the United States on March 24, 2025

    iPhone 13 128GB - Midnight - Unlocked
  • F

    Frankie C.

    Purchased on May 12, 2025

    Verified purchase

    Honestly, first time using Backmarket. Already out the box; this phone was in better quality then amazons “premium” refurbished phone. I received a iPhone 12 Pro pacific blue. With dents on the front and a non original screen. The phone I got from back market is absolutely beautiful and better than the Amazon one I received. Although; 2 things to note. That the battery was definitely worse. The one I got from backmarket is at 81% while the one I got from amazing was at 92% One side thing I did notice even though I bought this phone at excellent quality the screen has some minor scratches which I’m not too particularly pleased about. Although, it does have Apple OEM parts. So I can’t really be too worried about it. Been using it for a few days and it’s been solid.

    Reviewed in the United States on May 16, 2025

    iPhone 12 Pro 128GB - Pacific Blue - Unlocked
  • M

    Maura C.

    Purchased on May 23, 2025

    Verified purchase

    The refurbished iPhone 13 is great so far! The setup process was pretty easy, and everything’s working as expected. One small thing—this won’t affect my rating, but it’s worth mentioning: the mail-in kit for sending back my old phone for trade-in took a long time to arrive. I was getting close to the trade-in deadline, so I ended up using the packaging from the new phone instead. Aside from that, everything went smoothly.

    Reviewed in the United States on June 12, 2025

    iPhone 13 128GB - Blue - Unlocked
  • E

    Emily P.

    Purchased on May 27, 2025

    Verified purchase

    I was nervous because I didn’t think buying a refurbished used phone was going to be worth it. This is a lot of money we are talking about. I got the iPhone 13 Pro Max, and sadly got the last color available for this price. It has 1000 GB of storage and some reviews talk about the battery life not being 100%. I got mine and that was the first thing I checked after looking at the exterior (the outside of the phone isn’t cracked, it’s perfect. There’s a little bit of dirt in the speakers but the phone is used what do I expect) anyways the battery life is at 100% thankfully. Everything works good, sometimes my phone is laggy but it might be because it carries so much storage and data. I’ve had it for a week, but I’m so happy with my purchase. I think I got very lucky. I got the excellent quality one and it was worth the extra money.

    Reviewed in the United States on June 8, 2025

    iPhone 13 Pro Max 1000GB - Graphite - Unlocked
  • K

    Kristalyn L.

    Purchased on June 4, 2025

    Verified purchase

    At first I was skeptical and nervous about my purchase because.. well its a refurbished phone but ohhhh my god Im so glad I got It. My new IPhone 15 came completely untouched! It looks wonderful. It runs smoothly. Very happy with my purchase.

    Reviewed in the United States on June 8, 2025

    iPhone 15 512GB - Black - Unlocked
See all 62,691 reviews

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!