"Refurbished" can mean a factory rebuilt iPhone with a new battery or a scuffed phone that a stranger wiped and relisted. Here is how to tell them apart, what the grades and warranties actually promise, and when refurbished is the smarter buy.
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Short answer. A refurbished device is a used or returned product that has been inspected, repaired where needed and tested before resale, usually with a written warranty; a used device is sold as it is. Buying refurbished is the smarter choice when the seller gives at least a one year warranty, a clear return window and a stated battery standard, as Apple Certified Refurbished, Samsung Certified Re-Newed, Amazon Renewed Premium and Back Market all do on their own terms as of 7 November 2026. Cosmetic grades such as Excellent or Good are not standardized, so read each seller's own definition before you compare prices.
Refurbished electronics have moved from the clearance bin to the front page of manufacturer stores. Apple runs its own refurbished shop, Samsung sells Certified Re-Newed Galaxy phones, Amazon has a whole Renewed section and marketplaces such as Back Market exist for nothing else. That growth has brought a vocabulary problem. Renewed, refurbished, pre-owned, open box and certified sound like the same promise, and they are not. This guide explains the words, shows how named sellers define their grades and battery minimums, compares warranties side by side and then gives a verdict by product type and by buyer.
We did not buy, open or test any device for this article. Our method was desk research: we read the official program pages and help pages of the sellers named here, the US Federal Trade Commission's consumer and business guidance on warranties, Apple's own battery documentation, and published environmental studies, all checked on 7 November 2026. Where a seller's page and a third party summary disagreed, we used the seller's page. Where we could not find a primary source, we either left the claim out or say it is unverified.
Before reaching any verdict we fixed five criteria, in order of importance. The same five run through the rest of the piece.
Cosmetic grade comes last on purpose. Scratches are visible in photos and covered by return windows; a weak battery or a short warranty is what actually costs money later.
None of these words has a single legal definition that applies to every seller in the United States. In practice each one points to a different level of work done on the device and a different level of protection for you.
A refurbished product has been returned or traded in, then inspected, repaired where needed, cleaned and tested before resale. Back Market's definition is typical: refurbished devices "go through a quality inspection process" to reach full working condition, and they come with a one year warranty under the company's own promise. Apple describes its Certified Refurbished products as going through "a rigorous refurbishment process that includes full functional testing", with genuine Apple replacement parts as needed.
These are brand names, not separate categories. Amazon Renewed is Amazon's storefront for refurbished and pre-owned products, which Amazon says are "professionally-inspected and tested by a third-party company". Samsung Certified Re-Newed is Samsung's own refurbishment program for Galaxy phones that come back through its trade-in scheme. Both are refurbished goods; the brand tells you whose rules apply.
A used device is sold in its current condition. Back Market puts it plainly: buying used means buying "as-is", typically with no return policy or warranty. When a private person sells you a phone, US implied warranties generally do not apply at all, because, as the FTC explains, they cover merchants who deal in that kind of goods, not private individuals.
Open box usually means a product that was sold, opened and returned, or used as a display unit. It may never have been used, or it may have been used for weeks. Best Buy says its open box items are verified by Geek Squad, restored to factory settings and sold in Excellent, Good or Fair condition, and that its return and exchange policy for open box items "is the same as it is with new items". Open box products have not necessarily been repaired, because they often did not need to be.
This phrase borrows from the car market, but in electronics it has no shared meaning. Samsung's US page for Certified Re-Newed phones sits at an address labelled certified pre-owned phones, which shows how loosely the terms are used. Treat "certified" as a claim that needs a name behind it: certified by whom, to what written standard, backed by what warranty.
The practical rule is simple. Ignore the label and ask three questions: who inspected and repaired it, what is the written warranty and who honors it, and how long do I have to return it. The answers tell you far more than any adjective.
Sellers grade refurbished devices by how they look, and sometimes by how they work. The grade names overlap, Excellent and Good appear almost everywhere, but the definitions behind them differ. The table below sets out what three large sellers say their grades mean, using their own published descriptions.
| Seller and grade | Screen | Body | Other conditions |
|---|---|---|---|
| Amazon Renewed: Premium | No scratches | No visible damage when held 12 inches away | Battery above 90% of original life |
| Amazon Renewed: Excellent | No scratches | No visible damage when held 12 inches away | Battery above 80% |
| Amazon Renewed: Good | No scratches | Light scratches, barely visible at 12 inches, not felt by touch | Battery above 80% |
| Amazon Renewed: Acceptable | A few shallow scratches, invisible with the screen on | Scratches clearly visible at 12 inches and felt by touch; up to three minor dents | Battery above 80% |
| Back Market: Premium | No scratches | "Not a single scratch or dent" | Phone battery at least 80% (all grades) |
| Back Market: Excellent | No screen scratches | Minor marks not visible from more than 8 inches away | Phone battery at least 80% |
| Back Market: Good | Light marks possible | Light scratches or small dents not visible from arm's length (about 20 inches) | Phone battery at least 80% |
| Back Market: Fair | Marks possible | More noticeable scratches and dents | Phone battery at least 80% |
| Best Buy open box: Excellent | Looks and works like new | All original parts, packaging and accessories, or suitable replacements | |
| Best Buy open box: Good | Works like new; may have minor scratches or dents | May lack non-essential parts, accessories or original packaging | |
| Best Buy open box: Fair | Works like new; may have larger dents or scratches | May be missing parts and accessories | |
Three things stand out. First, inspection distance changes everything. Amazon judges at 12 inches, Back Market's Excellent at 8 inches and its Good at around 20 inches. "Good" at one seller can therefore look worse, or better, than "Good" at another. Second, some grades are partly functional. Amazon ties its Premium grade to a higher battery threshold; Back Market's grades are purely cosmetic and the battery minimum is the same across them. Third, open box grading is mostly about completeness. Best Buy's Fair grade can mean a missing accessory, which matters a lot for a laptop sold without its charger.
Manufacturer programs often avoid grades altogether. Apple sells its Certified Refurbished products in a new white box and says refurbished iPhones come with a new outer shell, so there is no grade to choose. Samsung's Certified Re-Newed phones are presented as a single standard too. When a manufacturer replaces the shell, cosmetic grading becomes irrelevant, and that is part of what you pay for.
For a phone you will put in a case, a lower cosmetic grade can be a sensible saving, as long as the screen grade is clean and the battery standard is the same. For a laptop, check the screen and keyboard specifically: marks on a lid are cosmetic, but a worn keyboard or a pressure mark on a display affects daily use. And if a listing gives a grade without linking to a written definition, treat it as ungraded.
The warranty and the return window are where refurbished programs differ most, and where the real value sits. The table summarizes what each program states on its own pages. Terms can vary by product and by country, so the listing in front of you always wins over this summary.
| Program | Who refurbishes | Written warranty | Return window | Battery promise |
|---|---|---|---|---|
| Apple Certified Refurbished | Apple | Apple's standard one year limited warranty; AppleCare can be added | Free returns (Apple's standard policy) | New battery and outer shell on refurbished iPhones |
| Samsung Certified Re-Newed | Samsung | One year limited manufacturer warranty, same as new | Per Samsung store policy | Certified new battery |
| Amazon Renewed Premium | Approved third party sellers | 365 day Renewed Guarantee | 365 day return period | Above 90% of original capacity |
| Amazon Renewed (standard) | Third party sellers | Amazon Renewed Guarantee | 90 days from receipt | Above 80% of original capacity |
| Back Market | Independent refurbishers on a marketplace | One year warranty | 30 days | Phones at least 80%; other devices at least 85%; optional battery upgrade guaranteed at least 90% |
| Best Buy open box | Not refurbished; Geek Squad verified | Often the same manufacturer warranty as new | Same as new items | No general promise stated |
| Geek Squad Certified Refurbished | Geek Squad (Best Buy) | Geek Squad warranty documents we found describe a 90 day limited warranty | Per Best Buy policy | No general promise found |
Read the table as tiers. At the top are manufacturer programs: the company that built the device stands behind it, the warranty is the same length as new, and the battery is replaced. Next come marketplace programs with written minimums, Amazon Renewed Premium and Back Market, where the guarantee is strong but the actual refurbishing is done by many different companies of varying quality. Then come shorter retailer warranties and open box items, where the deal can be excellent but the protection depends on the specific product.
Two details are easy to miss. Amazon's standard Renewed listings may come with a shorter return period plus a separate limited warranty serviced by a third party; the product page states which applies, so read it. And Back Market's one year warranty is administered through the marketplace, but the repair itself is usually handled by the seller who refurbished your device. That is a reasonable system, but it is not the same as walking into an Apple Store.
In the United States, written warranties on consumer products fall under the Magnuson-Moss Warranty Act, which the FTC enforces. Several of its rules matter directly to refurbished buyers.
Extended warranties and service contracts are a separate product. The FTC notes that they cost extra, may overlap with coverage you already have, and are only as good as the company behind them. For refurbished devices, a manufacturer plan such as AppleCare on an Apple Certified Refurbished product is a known quantity; a third party plan sold at checkout needs the same scrutiny as the device itself.
Lithium-ion batteries lose capacity as they go through charge cycles. Apple's own documentation gives a useful benchmark: iPhone 14 and earlier batteries are designed to retain 80 percent of their original capacity at 500 complete charge cycles, and iPhone 15 and later models at 1,000 cycles, both "under ideal conditions". In other words, 80 percent is roughly where a battery has reached the end of its designed first life.
That puts the sellers' promises in context:
Two practical points follow. First, check the battery as soon as the device arrives, while you are still inside the return window. On an iPhone, Settings shows Battery Health with a maximum capacity figure; Android and laptop tools vary by brand. Second, if a listing promises nothing specific about the battery, assume the worst case and price in a replacement. A new battery from the manufacturer can cost a meaningful share of a cheap refurbished phone's price, which can erase the saving.
Not every category carries the same risk. The pattern is simple: the more a device depends on a wearing part (a battery, a hinge, a motor, a fan), and the harder that part is to replace, the more the refurbishment quality matters. The ADEME study discussed below also covers smartphones, tablets, laptops and desktop computers, which are the categories with the most developed refurbished markets.
Environmental claims about refurbished electronics are everywhere, and many are marketing figures without a stated method. We used two sources with published methods.
How much e-waste there is. The Global E-waste Monitor 2024, published by the International Telecommunication Union (ITU) and the UN Institute for Training and Research (UNITAR) on 20 March 2024, reported a record 62 million tonnes of e-waste generated worldwide in 2022. Only 22.3 percent was documented as properly collected and recycled. The report projected 82 million tonnes by 2030. These are estimates built from national statistics and modelling, and the documented recycling rate counts only what was formally recorded.
How much refurbishing saves. The most rigorous comparison we found is a life cycle assessment commissioned by ADEME, the French environment agency, and published in September 2022 with EFL consulting, DDemain and Bureau Veritas. It followed the ISO 14040 and 14044 standards with a critical review, used data collected from refurbishers in 2021, and measured the impact of owning and using a device for one year. In its reference scenario, a refurbished smartphone avoided about 87 percent of the climate impact of a new one, roughly 24.6 kg of CO2 equivalent per year of use, and a refurbished laptop avoided about 77 percent, roughly 27.3 kg per year. Across all impact categories the study reported a range of 64 to 87 percent avoided annual impact for smartphones and 43 to 97 percent for laptops, depending on how many parts are replaced, where the work is done and how long the device is used afterwards.
Two caveats keep this honest. The study is French and reflects French refurbishing practices and electricity; numbers elsewhere will differ. And the saving assumes your refurbished purchase replaces a new one. Buying a refurbished phone in addition to the one you already have does not save anything. You may also see figures such as "91.6 percent less carbon" on retailer pages; Back Market's own explainer cites that number without giving a source or method on the page, so we do not rely on it.
Applying the five criteria from the start of this article, here is how we would decide.
The same habit of judging claims against stated criteria applies well beyond hardware. We use it in our guide to how to review AI language learning apps, and if a refurbished phone is going to be your main study device, our look at an AI language learning app on mobile in 2026 shows what kind of apps it will need to run smoothly.
No. A used device is sold as it is, often with no testing and no warranty. A refurbished device has been inspected, repaired where needed, cleaned and tested by a manufacturer or professional refurbisher, and is normally sold with a written warranty and a return window. The label alone guarantees nothing, so check who did the work and what the warranty says.
Only from some sellers. Apple says its Certified Refurbished iPhones get a new battery and outer shell, and Samsung says its Certified Re-Newed phones get a certified new battery. Marketplaces usually promise a minimum capacity instead: Amazon Renewed requires more than 80 percent of original capacity, or more than 90 percent for Renewed Premium, and Back Market promises at least 80 percent for phones.
Aim for at least one year of written coverage on phones, tablets and laptops. Apple, Samsung and Back Market all advertise one year, Amazon Renewed Premium comes with a 365 day guarantee, and standard Amazon Renewed listings promise 90 days. Short 90 day store warranties can still be acceptable on cheaper items if the return window lets you test the device fully first.
No. There is no industry standard. Amazon judges scratches from 12 inches away, Back Market describes its Excellent grade with an 8 inch distance and Good at about arm's length, and Best Buy uses Excellent, Good and Fair for open box items with different rules about missing accessories. Always read the seller's own definition for the grade you are buying.
Not automatically. Open box items are usually returns that may have been barely used, and at Best Buy they keep the same return policy as new items and often the same manufacturer warranty. Refurbished items have been through a repair and test process. For a recent product returned unused, open box can be the better deal; for an older or heavily used device, a certified refurbished unit with a new battery is usually safer.
The best independent evidence we found says yes. A 2022 life cycle assessment for the French environment agency ADEME estimated that, in its reference scenario, a refurbished smartphone avoids about 87 percent of the climate impact of a new one per year of use, and a refurbished laptop about 77 percent. The size of the saving depends on how many parts are replaced and how long the device is used.