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Best Used Samsung Galaxy S24 Ultra Deals Today

AI-curated top picks from hundreds of eBay listings. Updated daily with verified sellers and transparent pricing.

Top Picks Today

Updated: Apr 20, 2026

Product Image Samsung Galaxy S24 Ultra 512GB [SM-S928U] Titanium Violet (AT&T) #W996
#1

Samsung Galaxy S24 Ultra 512GB [SM-S928U] Titanium Violet (AT&T) #W996

Very Good - Refurbished

$519.00
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Why we picked it #1

This listing stands out because you get a Galaxy S24 Ultra with a massive 512GB of storage, in great refurbished condition, from a seller with a stellar reputation. The price is one of the most affordable among the 512GB options, so you’re getting plenty of space for apps, photos, and videos without overpaying. The seller accepts returns, covers return shipping, and even includes a 30-day warranty, giving you confidence if anything isn’t right after you get it. You’ll also get charging accessories included, which is a convenient bonus. While the phone is carrier-locked to AT&T (so you’ll need to use it with them or look into unlocking it), you benefit from a trusted, top-rated seller known for reliability. If you’re fine with the AT&T lock or plan to use that network, this is a winner for best value. Compared to others, you’re saving money and don’t have to compromise on storage or peace of mind. The one minor downside: it’s not factory ‘certified refurbished,’ but it does meet eBay’s standards and comes from a very established seller.

Product Image Samsung Galaxy S24 Ultra 512GB [SM-S928U] Titanium Violet (AT&T) #W747
#2

Samsung Galaxy S24 Ultra 512GB [SM-S928U] Titanium Violet (AT&T) #W747

Very Good - Refurbished

$499.00
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Why we picked it #2

You’re getting the S24 Ultra with a roomy 512GB of storage at the lowest price among the top-tier options—hard to beat for value. This unit is in very good refurbished condition, with light cosmetic wear, so it’ll look and feel much like new. Charging accessories are included, which saves you another expense up front. The seller is highly trusted (top-rated, with glowing feedback), accepts returns, and covers the shipping if you need to send it back. There’s also a 30-day warranty for extra peace of mind in case anything crops up after you receive it. The main limitation here is that it’s locked to AT&T. If you’re on that network or don’t mind unlocking (sometimes possible for a small extra step/cost), you’re getting almost everything the top pick offers for even less money and in slightly better cosmetic shape. If storage and price are your top priorities and you’re OK with the carrier restriction, it’s tough to find a better deal in the lineup.

Product Image Samsung Galaxy S24 Ultra 512GB SM-S928U1 Violet (Unlocked) #W993
#3

Samsung Galaxy S24 Ultra 512GB SM-S928U1 Violet (Unlocked) #W993

Good - Refurbished

$569.00
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Why we picked it #3

You’re considering a 512GB S24 Ultra that’s fully unlocked, so you can use it with any major carrier—definitely a plus if you value flexibility. The seller is reputable and offers a return window, and you’ll get a charging cable and wall plug included, which is handy. However, you are paying quite a bit more than the top two picks, which are in better cosmetic condition and cost noticeably less. This unit is a step down in condition (moderate wear, even though it’s refurbished), so if you’re picky about how your phone looks, that’s worth considering. Against top choices, you’re giving up some value for the benefit of carrier freedom. If you want maximum storage and to use your phone with any provider, this is your option—but you could save a good chunk of money (and get a phone in better shape) if you’re okay with AT&T restrictions or slightly less pristine looks.

Product Image U.S Carrier Unlocked -Samsung Galaxy S24 Ultra 5G 256GB -All Colors - Grade A
#4

U.S Carrier Unlocked -Samsung Galaxy S24 Ultra 5G 256GB -All Colors - Grade A

Used

$598.99
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Why we picked it #4

What sets this listing apart is the full year of seller warranty—much longer coverage than nearly any other option here. You’re also getting an unlocked phone, so you can use it with almost any carrier, and buying from a top-rated seller with excellent feedback. Returns are accepted within 30 days and shipping is covered both ways if anything’s wrong. On the flip side, this is a standard used phone (not refurbished), and it only comes with 256GB of storage instead of 512GB. That’s plenty for many people, but if you keep offline videos or lots of big apps, you might hit the ceiling faster. Plus, the price is on the higher end, so you’re paying a premium for the warranty and flexibility. If peace of mind and carrier freedom are your priorities—and you don’t need a ton of storage—this is a solid, trustworthy pick. But if you want pure value or bigger storage for less money, look at the top two refurbished picks above.

Product Image Samsung Galaxy S24 Ultra Unlocked 5G SM-S928U 256GB Titanium Violet • Fair
#5

Samsung Galaxy S24 Ultra Unlocked 5G SM-S928U 256GB Titanium Violet • Fair

Used

$489.00
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Why we picked it #5

This is easily the lowest-priced S24 Ultra you’ll find in this lineup—great if you’re stretching your dollar and don’t mind a tradeoff or two. You get 256GB of storage, an unlocked phone for use on any carrier, a 30-day return window, and the option to purchase an extended warranty, which is not something most listings offer. The biggest compromise here is that this is a used phone (not refurbished) and its cosmetic wear is more noticeable. You’re also missing out on accessories—it doesn’t come with a charger or box, so budget for those extras if you need them. The mention of Xfinity software is a quirk: it won’t impact day-to-day use much, but you might see some pre-installed apps linked to that. You save a good chunk over the next cheapest unlocked pick, and if condition isn’t your top priority, the value is hard to beat—especially with the extra warranty option as a safety net.

Product Image Samsung Galaxy S24 Ultra SM-S928U 256GB Unlocked Very Good Condition
#6

Samsung Galaxy S24 Ultra SM-S928U 256GB Unlocked Very Good Condition

Very Good - Refurbished

$573.23
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Why we picked it #6

You’ll get a S24 Ultra that’s refurbished to a very good standard—light wear, so it’ll look clean—and fully unlocked for wide carrier flexibility. This seller is top-rated and respected, offers a 30-day free return window, and even throws in a SIM ejector tool (a nice touch if you swap SIMs a lot). They also mention ISO9001 certification, which signals a higher quality refurb process. However, compared to the best-value options above, you’re paying quite a bit more (almost $75 more than the #2 pick), and you’re only getting 256GB of storage rather than 512GB. No charger in the box, either. The standout here is the strong refurb quality and flexibility to use any carrier. But unless you have a reason to avoid AT&T-locked phones or want the guarantee on refurb processes, you’ll spend less and get double the storage with the top picks. Worth it if “fully unlocked” and nicely refurbished matter more to you than price per storage gig.

Product Image Samsung Galaxy S24 Ultra SM-S928U 512GB Unlocked Very Good Condition
#7

Samsung Galaxy S24 Ultra SM-S928U 512GB Unlocked Very Good Condition

Very Good - Refurbished

$628.25
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Why we picked it #7

This listing offers you the S24 Ultra in 512GB—always nice for future-proofing your storage needs—and the peace of mind of a top-rated, reputable seller. The phone is unlocked and refurbished to a very good standard, including both a charging cable and a SIM ejector, so you’re covered on basic accessories right away. The refurbishing process is also ISO9001 certified, suggesting a careful, quality-driven approach. However, you are paying a significant premium—over $100 more than the #2 option, which also gives you 512GB (though AT&T-locked). The main advantage here is the unlocked status and assurance on refurbishing quality, but if you want pure bang for buck, the extra cost may not feel justified unless flexibility and condition reassurance are most important to you. If you want an unlocked model with lots of storage and don’t mind paying for those perks, it’s a strong (if pricier) contender.

Product Image Samsung Galaxy S24 Ultra SM-S928U 512GB Unlocked Excellent Condition
#8

Samsung Galaxy S24 Ultra SM-S928U 512GB Unlocked Excellent Condition

Excellent - Refurbished

$647.89
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Why we picked it #8

You’re getting the S24 Ultra in excellent refurbished condition—about as close to new as it gets without paying full price. This is the 512GB version, so you’ll have loads of space, and the phone is unlocked for use on any carrier, which is handy if you like to switch providers or travel. The seller is well-established, highly rated, and adds confidence with a strong return policy, ISO9001 refurbishing standards, and included accessories like a charging cable and SIM tool. But all this comes at a premium: you’re paying nearly $150 more than the best-value listing for the same storage (though those are AT&T-locked and just “very good,” not “excellent”). If condition and flexibility are your top priorities and you don’t mind spending more for peace of mind, you’ll be happy here. Otherwise, cheaper options above deliver nearly the same practical experience for less, with only modest cosmetic or carrier tradeoffs.

Product Image Samsung Galaxy S24 Ultra 256GB Titanium Gray (Unlocked) SM-S928U1
#9

Samsung Galaxy S24 Ultra 256GB Titanium Gray (Unlocked) SM-S928U1

Used

$499.00
View on eBay

Why we picked it #9

Here’s a unique option if you want an S24 Ultra that’s unlocked, comes with original packaging and accessories, and still has a full year of manufacturer warranty left—unusual for a 2024 device in this price range. The seller’s feedback is spotless, and you get the 256GB version for a fair price (on par with the cheapest entries). The catch: it’s sold as used, not refurbished, with moderate wear, and this seller does not accept returns—so this is best if you’re comfortable trusting their perfect track record. You’ll miss out on a return window and return shipping coverage you’d get with almost every other option above. If warranty and original condition matter most and you’re okay without returns, this could be a hidden gem; otherwise, slightly pricier listings give you more flexibility if you’re wary of buying used sight unseen.

Product Image Samsung Galaxy S24 Ultra SM-S928U 256GB Unlocked Excellent Condition
#10

Samsung Galaxy S24 Ultra SM-S928U 256GB Unlocked Excellent Condition

Excellent - Refurbished

$643.06
View on eBay

Why we picked it #10

This listing gives you a Galaxy S24 Ultra in excellent refurbished condition—unlocked, lightly worn, and ready to go on any carrier. You’ll get a certified refurbisher with quality control credentials (ISO9001), a seller who’s proven trustworthy, and included basics like a charging cable and SIM tool. The big hold-up is the price: you’re paying a lot more for that "like new" refurb and unlocked status. Plus, this only has 256GB of storage, so if you’re keen on storing lots of photos or videos, other listings above give you double the space for less money (especially if you don’t need an unlocked phone). You do get a 30-day return policy, but no explicit long warranty. Go for this if you absolutely want the best cosmetic condition and carrier flexibility and are fine with spending extra. Otherwise, you can save a chunk with earlier options if you’re happy with a few scuffs or a carrier-locked device.

Our AI Expert Finds the Best Samsung Galaxy S24 Ultra Deals, Every Day

Every day, our AI analyzes hundreds of Samsung Galaxy S24 Ultra listings across major resellers to surface the truly best deals — not just the cheapest.

What Makes Our AI-Powered Rankings Different

Most deal sites sort by price and call it a day. We go deeper. Our AI evaluates every listing across multiple dimensions:

💰 Smart Value Analysis

We compare specs, condition, and features against the asking price — not just looking for cheap, but for worth it.

✅ Condition Intelligence

Refurb grade, cosmetic notes, battery health, included accessories — we read between the lines so you know exactly what you're getting.

🛡️ Seller Trust Score

Feedback ratings, return policies, warranty coverage — we favor sellers with a proven track record of keeping buyers happy.

⚠️ Risk Detection

Missing details, vague descriptions, or red flags? Our AI catches what's not said and adjusts the ranking accordingly.

Fair, Transparent, and Updated Daily

Every listing gets the same rigorous analysis. Our scoring system weighs dozens of real-world signals — from price-to-spec ratios to seller reputation — to produce a single, transparent ranking.

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Samsung Galaxy S24 Ultra

Samsung Galaxy S24 Ultra: Why Buy Used?

The Galaxy S24 Ultra is Samsung's 2024 flagship with S Pen -- a powerful smartphone featuring the Snapdragon 8 Gen 3 processor, a 6.8" QHD+ Dynamic AMOLED 2X 120Hz display, and a 200MP+12MP+10MP+50MP camera system. Now one generation old, buying used is an excellent way to get flagship performance at a meaningful discount.

What Makes the Galaxy S24 Ultra a Great Choice

Every Galaxy S24 Ultra has the same core hardware -- the only thing that varies between units is storage capacity. That makes buying used straightforward: you're getting the same phone regardless of who owned it before.

  • Snapdragon 8 Gen 3 processor -- Samsung's 2024 flagship chipset delivers top-tier performance for gaming, photography, multitasking, and everyday use.
  • 200MP+12MP+10MP+50MP camera system -- 200MP main, 12MP ultra-wide, 10MP 3x telephoto, 50MP 5x telephoto. Capable of detailed photos and 4K video recording in virtually any condition.
  • 6.8" QHD+ Dynamic AMOLED 2X 120Hz display -- Dynamic AMOLED 2X panel with vivid colors, deep blacks, and smooth 120Hz scrolling. Excellent for media, gaming, and outdoor visibility.
  • S Pen included -- Built-in S Pen stylus for notes, sketches, and remote control of the camera. A signature Samsung productivity feature.
  • 12GB RAM -- Plenty of memory for smooth multitasking and app switching.
  • 256GB, 512GB or 1TB storage -- Choose the capacity that fits your needs. Larger options command a premium on the used market.
  • 5000mAh battery -- Large battery with fast wired charging and Qi wireless charging.
  • Android 14 + One UI 6.1 -- 7 years of OS and security updates. Samsung's long update commitment means this phone will receive software support for years to come.
  • IP68 water resistance -- Dust and water resistant (up to 1.5 meters for 30 minutes).
  • Samsung DeX -- Connect to a monitor for a desktop-like experience.

Who Is This Phone For?

  • Power users and productivity enthusiasts -- The Galaxy S24 Ultra with its S Pen is designed for people who demand the most from their smartphone -- top-tier camera, large screen, and maximum performance.
  • Photography enthusiasts -- The 200MP main camera and multi-lens system deliver versatile, high-quality shots in any lighting condition.
  • Budget-conscious buyers who want premium -- Buying used means flagship Ultra features at a fraction of the new price. As a one-generation-old model, used prices offer strong value.
  • Upgraders from older Samsung phones -- If you're coming from an S21 or older, the jump in display quality, camera capability, and processing power is dramatic.

Smart Tips for Buying Used

  • Check Google FRP lock -- A phone with Factory Reset Protection still tied to someone else's Google account is unusable. Make sure the seller confirms FRP is cleared.
  • Verify Samsung Knox status -- Knox 0x1 means the phone was rooted or modified at some point. This permanently voids Samsung warranty and disables Samsung Pay, Samsung Health, and some enterprise features. Knox 0x0 is what you want.
  • Check IMEI status -- Should be clean (not blacklisted or reported lost/stolen). You can check this for free at imeipro.info or similar services.
  • Screen burn-in -- AMOLED displays can develop burn-in over time, especially around the navigation bar and status bar areas. Ask the seller about any ghosting or permanent marks on the display.
  • Battery health -- Samsung doesn't show battery health percentage as easily as iPhones. Check Samsung Members app data if the seller can provide it, or look at battery cycle count. On a one-generation-old device, some battery degradation is normal.
  • Network lock -- Unlocked phones work on any carrier and command a premium. Carrier-locked phones are cheaper but restricted to one network.
  • Look for returns and warranty -- 30-day returns at minimum. Some professional sellers offer 90-day or 1-year warranties. All units are past Samsung's original warranty -- seller warranty matters more.
  • Trust the AI rankings -- Our system analyzes price, condition, seller trust, and return policies to surface the best deals. The top picks represent genuine value.

Frequently Asked Questions

Is the Samsung Galaxy S24 Ultra worth buying used?

Yes. Every unit has the same Snapdragon 8 Gen 3 processor, the same camera system, and the same 6.8" QHD+ Dynamic AMOLED 2X 120Hz display -- there's no performance lottery. The only variable is storage size (256GB, 512GB or 1TB). Buying used saves significantly off the original retail price. As a one-generation-old model, used prices offer strong value -- you get a Samsung flagship with 200MP camera and 120Hz display for a fraction of the current retail price.

How does used compare to refurbished?

  • Used: Sold by the previous owner. Condition varies -- check the listing carefully for cosmetic wear, screen burn-in, and battery health.
  • Refurbished: Professionally inspected, tested, and cleaned by a seller or authorized refurbisher. Often comes with a warranty and graded condition (Excellent, Very Good, Good).

Both can be great value. Our AI evaluates condition, seller trust, and return policies regardless of the label.

What should I check before buying a used Galaxy S24 Ultra?

  • Google FRP lock -- Make sure Factory Reset Protection is cleared. A phone still tied to someone else's Google account is unusable.
  • Samsung Knox status -- Knox 0x0 is good. Knox 0x1 means the phone was rooted/modified, which disables Samsung Pay and voids warranty.
  • IMEI status -- Should be clean (not blacklisted).
  • Screen burn-in -- Look for ghosting or permanent marks on the AMOLED display, especially around the navigation bar.
  • Battery health -- Check the Samsung Members app data if available. Some degradation is normal for a one-generation-old device.
  • Network lock -- Unlocked phones work on any carrier. Carrier-locked phones are cheaper but limited.
  • Return policy -- At least 30 days. Many top sellers offer longer.

What's the difference between the Galaxy S24 Ultra and the Galaxy S24 / S24+?

The Galaxy S24 Ultra is the top-tier model in the S24 series. Compared to the standard and Plus models, the Ultra offers: a larger 6.8" QHD+ display, a 200MP main camera (vs 50MP), an S Pen stylus, a titanium frame, and more RAM/storage options. The standard S24 and S24+ are more affordable and lighter, but the Ultra delivers the most capable camera, the best display, and the most complete feature set.

What's the difference between 256GB vs 512GB vs 1TB?

Storage is the only hardware difference between units:

  • 256GB -- The base and most common option. Fine for most users.
  • 512GB -- Good for heavy photo/video shooters or large app libraries.
  • 1TB -- Best for power users who store lots of media locally. Least common and commands a premium.

Our AI factors storage into the value ranking, so higher-storage deals that represent good value will rank accordingly.

Why are prices so different for the same phone?

Pricing varies by storage tier (256GB vs 512GB vs 1TB), network lock status (unlocked costs more), cosmetic condition, screen burn-in presence, battery health, and seller reputation. Our AI analyzes all of these daily to surface the best-value deals.