• 1-year warranty
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Refurbished iPhone 6s (unlocked)

Warranty: 12 months

13 products

iPhone 6s • UnlockedGold • 32 GB • Physical SIM

(288)
$63.00
$189.00 new

iPhone 6s • UnlockedGold • 16 GB • Physical SIM

(297)
$62.00
$159.00 new

iPhone 6s • UnlockedGold • 64 GB • Physical SIM

(297)
$63.00
$239.00 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.

Refurbished iPhone 6s (unlocked)'s customer reviews

312 verified reviews in the last 24 months.

  • K

    Kameron Y.

    Purchased on May 23, 2025

    Verified purchase

    This was an amazing item to buy I never would have a thought a iPhone 6s would come with 97% especially when it's refurbished and I honestly see no scratches on the phone although I didn't receivea charger hopefully I can get one sent out but at first I was skeptical about back market because I didn't know what to except but when it came in the mail I was super happy so I definitely recommend back market.

    Reviewed in the United States on May 28, 2025

    iPhone 6s 32GB - Space Gray - Unlocked
  • R

    Ryleigh L.

    Purchased on May 1, 2025

    Verified purchase

    The phone I bought was a iPhone 6s 32 GB, Space Gray in excellent condition. It came within two days of purchasing it and is stunning with seemingly no flaws other than a slight dent on the apple logo and very few scratches. It also came with a screen protector already on it, which was a plus in my opinion.

    Reviewed in the United States on May 3, 2025

    iPhone 6s 32GB - Space Gray - Locked Verizon
  • D

    Doug S.

    Purchased on December 17, 2024

    Verified purchase

    I bought this older model iPhone for one reason only--to connect by Bluetooth to our stereo system to play WQXR radio. It replaces an ancient iPhone 6, whose battery swelled (for a second time) to a truly grotesque degree, and was no longer safe. The "new" iPhone 6s's condition was supposed to be medium (or something). It looked absolutely new, at least in our case. It worked. It was cheaper than another solution. Service was great. Review is therefore "Awesome."

    Reviewed in the United States on January 5, 2025

    iPhone 6s 16GB - Space Gray - Unlocked
  • R

    Rameasha B.

    Purchased on May 8, 2025

    Verified purchase

    Iphone was just as described. I have bought a few things from back market & it’s never been any problems. Warranty is great & if you need anything such as replacement chargers or anything they replace it immediately.

    Reviewed in the United States on May 28, 2025

    iPhone 6s 64GB - Rose Gold - Locked AT&T
  • C

    Cherryl M.

    Purchased on November 8, 2020

    Verified purchase

    For shoppers: I bought my iPhone 6S from BuySaveRepeat in Nov. 2020 and it's been hassel-free from day one. Wonderful. No issues, no problems. But now, no memory. So I'm back. For BackMarket: Here's the thing for us research-vendors-before-you-buy-their-refurbished-stuff folks: I compare loads of customer reviews to help lessen the chance I live someone else's shopping nightmare. And without a vendor search tool this takes waaaaaaay, way too long. I can do a hard-target search for exactly what I want but I can't find any specific vendor in the same direct and reliable way. Suggestion to BackMarket--- You have smart consumers living in a tight economy. Help us make our best choices without resigning ourselves to computer dry-eye and valium by simply adding a search-by-vendor box.

    Reviewed in the United States on June 27, 2023

    iPhone 6s 16GB - Rose Gold - Unlocked
  • L

    Leslie B.

    Purchased on June 13, 2025

    Verified purchase

    i was skeptical because this was the first time I ordered off back market. the only other issue is that the phone overheats a little, but it works great. ill definitely come back in the future, you earned my business!!!!!!

    Reviewed in the United States on June 16, 2025

    iPhone 6s 16GB - Silver - Unlocked
  • S

    Sharon T.

    Purchased on March 28, 2021

    Verified purchase

    Bought this phone for my son. It has lasted over 2.5 years and just now acting up occasionally. So, here I am again, upgrading his phone to a refurbished 8 plus. Hopefully I will have another great experience with Back Market.

    Reviewed in the United States on October 22, 2023

    iPhone 6s 128GB - Space Gray - Unlocked
  • J

    Joseph E.

    Purchased on March 8, 2023

    Verified purchase

    slight scratches on the screen for an excellent phone, But other than that it worked pretty well and the battery was not too bad, it was at 85% when i checked. pretty good purchase overall if you're looking for a cheap refurbished phone.

    Reviewed in the United States on September 22, 2023

    iPhone 6s 32GB - Space Gray - Unlocked
  • S

    Sha L.

    Purchased on August 19, 2023

    Verified purchase

    Great little phone that I am only using for it's music player capabilities. The item was as advertised, in great shape overall and ready to insert into my protective case to keep it alive from my rigorous use and handling. When I inserted an aux plug wire into The 3.5mm jack port, it was actually plugged up some with lint or gunk and would not work because the plug would not go in properly and seat as it should. I fix things often so I used a small wire to dig out the port and got all the gunk out and it works fine now. Not a big deal for me, but could have been an issue for someone else. I appreciate Back Market and I was not about to bug them about this tiny oversight by whatever company refurbished the unit. Not many folks are still using the plug anyway, so a rare occurrence in the big picture of things. I would buy from this seller again for sure, as they float a 1 year warranty on the item I bought. Good deal, thank you !!

    Reviewed in the United States on September 4, 2023

    iPhone 6s 128GB - Silver - Unlocked
  • G

    Gabriel H.

    Purchased on August 28, 2021

    Verified purchase

    I got the 6S because it’s the last model made with a headphone port, which I use to connect to my car. It arrived in perfect condition, in 4-5 days. I had to replace the battery in a little under 2 years, but it wasn’t a big deal. The process was easy. I definitely recommend Back Market for refurbished devices.

    Reviewed in the United States on August 5, 2023

    iPhone 6s 128GB - Silver - Unlocked
See all 312 reviews

Looking for a GSM unlocked iPhone 6s?

If you want a GSM unlocked iPhone 6s, make sure it is able to work on both AT&T and T-Mobile networks. There should be a little infographic below each product that displays this information :D

Is it worth getting an iPhone 6s in 2021?

You're probably not sure if this phone is still good in 2021. Not to worry! We wrote this article to tell you what it will be like using the iPhone 6s in 2021 :) 

Looking for an unlocked iPhone 6s for sale? Or a deal on an iPhone 6s?

We have some of the best iPhone 6S deals on the web. All of our products are certified refurbished and come with an awesome warranty and money-back guarantee.

Released in 2016, the iPhone 6s was the refinement of the revolution that was the iPhone 6. Apple reinforced the metal body in response to the “bendgate” controversy that engulfed the iPhone 6. Due to these changes, the phone became more sturdy, but still kept those iconic antenna lines and overall marvelous design. Call me nostalgic, but in my opinion, this is one of the best-looking phones Apple ever made. And if you’re reading this, my guess is that you probably agree (:

Is buying an unlocked iPhone 6s a good idea? Let’s think about it together!

I know what you’re thinking. It’s not the newest iPhone. Will it still serve my purpose? I think so. Unlike the iPhone 6 before it, the unlocked iPhone 6s is upgradeable to iOS 14. This means that it should still be buttery smooth and feel new, despite already being a few years old. The cameras on this phone aren’t as impressive as the multi-lens solutions featured on the newest high-end iPhones, but if you’re not a photography geek, I think this will be enough for you. And we all know how Apple overcharges for more storage on new iPhones. You may as well get a version with at least 64GB so that you don’t run out of space when installing apps or taking pictures/videos.

Why Should You Buy a Cheap iPhone 6s Unlocked from Back Market?

If you shop used or refurbished iPhones on Amazon, you honestly don’t know what the quality of your device is going to be until you get it. The word “refurbished” has no universal meaning. Amazon doesn’t enforce any rules or checks on refurbishers. Products are often sold with underlying problems without being properly checked at a factory. For this reason, many people struggle to trust refurbished products.

But Back Market’s mission is to be the first refurbished retailer you can trust. Unlike Amazon, we have quality controls and checks to ensure that products are properly inspected and fixed (if necessary) before being sold. We give 12-month warranties included with our products to help you trust us, and we take care of any problems you may have with your device inside that period. We also give a 30 day money-back guarantee that lets you return your device within a month if there’s anything you don’t like about it! We know that sometimes things look different in-person than on a website.

Consider this as an informal little invitation to join our Back Market family (: