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🚀 Elevate your mobile game with the Galaxy S21 Ultra — power, style, and freedom in one sleek package!
The Samsung Galaxy S21 Ultra 5G (256GB, Black) is a premium unlocked smartphone featuring a massive 256GB storage, 16GB RAM for ultra-smooth performance, and a stunning 6.8-inch Dynamic AMOLED display. Its pro-grade camera system excels in zoom and low-light photography, while the unlocked design offers carrier flexibility. This renewed model delivers flagship specs and style at a smart value.




| ASIN | B08Y5P6WKC |
| Battery Capacity | 5000 Milliamp Hours |
| Battery Charge Time | 25 Watts |
| Battery Description | Lithium-Ion |
| Battery Power | 5000 |
| Best Sellers Rank | 4,459 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 66 in Renewed Mobile Phones & Smartphones 200 in SIM-Free & Unlocked Mobile Phones |
| Biometric Security Feature | Face Recognition |
| Brand | Samsung |
| Brand Name | Samsung |
| CPU model | Exynos 2100 S5E8840 |
| CPU speed | 2.9 GHz |
| Camera Description | Front |
| Cellular Technology | 5G |
| Colour | Black |
| Customer Reviews | 4.1 out of 5 stars 1,274 Reviews |
| Display Type | LCD |
| Form Factor | smartphone |
| Frame Rate | 30 |
| GPS Geotagging Functionality | True |
| Human Interface Types | Touchscreen |
| Item Dimensions | 16.5 x 7.6 x 0.9 centimetres |
| Item Weight | 0.23 Kilograms |
| Manufacturer | Samsung |
| Maximum Display Resolution | 3200 x 1440 (QHD+) Pixels |
| Memory Storage Capacity | 256 GB |
| Memory storage capacity | 256 GB |
| Model Year | 2021 |
| Network Connectivity Technology | Bluetooth, NFC, USB, Wi-Fi |
| Number of Front Cameras | 1 |
| Operating System | Android 11.0, One UI 3.1 |
| Operating system | Android 11.0, One UI 3.1 |
| Optical Sensor Resolution | 8 MP |
| Phone Talk Time | 1.25 Hours |
| Processor Series | Exynos 2100 S5E8840 |
| Processor Speed | 2.9 GHz |
| Product Features | Dual SIM, Fast Charging Support, Fingerprint Sensor, Mobile Hotspot Capability, Wireless Charging |
| Product Warranty | 1 year limited warranty |
| RAM Memory Installed | 8 GB |
| RAM memory installed size | 8 GB |
| Refresh Rate | 120 |
| Resolution | 3200 x 1440 |
| SIM Card Slot Count | Dual SIM |
| Screen Size | 6.8 Inches |
| Specific Uses For Product | gaming, photography, streaming, video conferencing |
| UPC | 649661799818 |
| Video Capture Resolution | 1080p |
| Water Resistance Level | Water Resistant |
| Wireless Network Technology | Wi-Fi |
| Wireless Provider | Unlocked |
V**A
Amazing Value for a Powerhouse Phone!
I recently bought a refurbished Samsung Galaxy S21 Ultra Phantom Black (512GB, 16GB RAM, Unlocked) and I’m honestly blown away by the value for the price I paid. You wouldn’t even know it’s refurbished – it looks and works like new! Performance: With 16GB of RAM, this phone is incredibly fast. Apps open instantly, multitasking is smooth, and it handles everything from streaming to gaming with ease. Storage: 512GB is more than enough for all my apps, photos, and videos. I don’t have to constantly delete things or rely on cloud storage. Condition: For a refurbished device, the condition is excellent. There may be a tiny mark or two if you look closely, but it feels solid, clean, and well cared for. Display & Camera: The screen is stunning – bright, sharp, and super responsive. The camera quality is incredible, especially the zoom and night mode. Perfect for capturing high-quality photos and videos. Battery & Unlock: Battery life is very good, and being unlocked means I can use it with any carrier, which is super convenient. If you're on a budget but still want a top-tier smartphone, this refurbished S21 Ultra is a smart choice. High-end specs, huge storage, and beautiful design – all for a fraction of the price. Couldn’t be happier with my purchase! Thank you
L**.
Samsung S21 Ultra Refurbished (excellent condition)
I was a bit dubious buying a refurbished phone having read previous reviews but must say I am delighted with this purchase. I bought this phone in Nov so have had 2 months now and no issues at all. Phone operates well, fast processing and battery life is excellent (much better than my old S9+). The camara quality is also much more superior. The phone came well packaged and included a USB cable and sim pin. The condition of the phone is as advertised in excellent condition with only a couple of very minor scrapes on top corner but this is not noticeable unless you go looking. Screen was perfect with no scratches at all. Overall delighted with this purchase from 4gadgets and have recently bought a S21 for my wife which was also in great condition and working perfectly. Thanks
A**R
Avoid
I bought 2 of these phones just over a year ago and the problems started straight away. camera fail error. screens erratic when charger plugged in, terrible signal, loses 40% battery overnight on both phones. and replacement. the list goes on. eventually had to return for replacement. i should have asked for a refund at that time, however customer services offered replacement so accepted. a short time later the camera failed again. reset phone, still nothing. after further investigation i think these telephones are imported from USA and have the screens or back replaced then resold with uk software although original Verizon contract phones. having since had the phones looked at properly it is noted that neither screen had been sealed properly which allows dust to enter, this can now be seen on the inside of the front facing lens so that camera is useless. all i can say is AVOID.
Z**.
Excellent Condition
Got the phone delivered quick on a Tuesday, way ahead of the quoted weekend. Very satisfied with delivery. It came in a plain black box with USB-C cable (no charger). Phone condition is excellent. Like brand new. Very impressed with condition. For the cost of a brand new mid range phone, this is a flagship with 256GB from a couple years back. Everything works as expected. The ONLY downside to this phone is that the battery condition is around the 85% mark (to be expected for 3yr old phone) and the phone is already a powerhouse of functionality and so is heavy on the battery. Still with my normal regular use a day an a half is doable. or 1 day heavy use. Very clear screen display and capability and if you can think of it, this phone can do it. Of course the main reason for getting this phone was the camera. It does not disappoint. The zoom capability is incredible. Clear photos up to 30x magnification and reasonable clarity up to 100x. Excellent video recorder too with 4K 60fps on all cameras front and back. A weakness in the video is low light but that can be improved significantly by switching down to 30fps and then using something like Davinci Resolve to interpolate back to 60fps. All in all, well worth the money.....
P**E
As an S21 Ultra it's useless, but......
......as an S22 Ultra, it's fab! 👍😁 Free upgrade 🤔. Really nice phone in great condition with no visible defects (apart from the new owner ) and markedly better battery life (main reason for the upgrade after 3+ years). A bit thinner, lighter and bigger screen than the S21 U. Got a pen an all! Wanted another S21U as I'm all 'Quad Locked' up (car, bike and bike) and also has a spare case!!! However, onwards and upwards. The S22U is great and I've forgotten how rigid the QuadLock cases were when they were new. Very happy 😊 (so far 😉).
G**W
Stock Must Go Ltd - Pleasantly Surprised - BUZZING! - Over the moon!
I'm reviewing "Stock Must Go Ltd", here, not the phone, we all know the phone is great otherwise you wouldn't be buying one and you've already done the research. I essentially had a fully refundable gamble buying this phone from Stocks Must Go Ltd because there are some real horror stories in the other reviews for this stockist.. I'd scoured Backmarket and Amazon for weeks before committing to this phone. I had some real trepidation about buying a refurbished phone too, because the bad experiences are well known, far and wide. I couldn't quite find the right deal for "me" on Backmarket, so I started looking on Amazon. Amazon's refurbished grading system isn't as good as Backmarkets either, so that was another thing to consider when buying via Amazon instead of Backmarket. I think it was a complete fluke that I stumbled across the best possible deal I'd found so far. A 256GB S21 Ultra for £290 in excellent condition!? Could it be true? :-o ... (This was the same price as the 128GB model in other places on Amazon and Backmarket - double the bang for my buck!). It sounded too good to be true.... Furthermore, the selections for storage and condition didn't match up with the title of the advertised product and the price kept jumping around too after having it in my basket for a few hours. Convinced there had been some mix-up, or stocking fumble at Stock Must Go Ltd, I placed my order. I LITERALLY bought it for a laugh because I was intrigued about what would turn up! HAHA! - The exact same phone, in excellent condition, was over £200 more on Backmarket.. and from the same refurb company too :-o Well, ladies and gentlemen; I've been in absolute shock for the last 3 weeks expecting it to pack up, but it hasn't, it's still going strong! I love it! What I received was an S21 Ultra, with 256GB of storage, in excellent condition, and not a single scratch anywhere! Exactly as advertised, albeit apart from 2 tiny scuffs on the camera module which are only visible to the naked eye. You can't even see them on camera! It looks practically brand new and the battery life is brilliant too! Also Included in the box were; - A brand new Quicker Charger, - A brand new QC cable, - A Giffgaff sim card (just in case I needed one.. nice touch) and - A sim card ejector thingy-me-bob. NOTE WELL: NOBODY sends phones out with chargers anymore! Not even the manufacturers. You have to go buy your own. I am absolutely over the moon with my purchase and I fully recommend this refurb company. Pro-Tip - Look for the "Dispatches from" and "Sold by" below the "Buy" button. A******** EXCELLENT SERVICE! Would recommend, would buy again.
A**G
Excellent Seller, Amazing Refurbished Samsung S21 Ultra!
I recently bought a refurbished Samsung S21 Ultra from this seller, and I'm really impressed with both the phone and their service. Firstly, the seller was great at communicating. They answered all my questions about the refurbished phone quickly and clearly, which helped me decide to buy it. Shipping was super fast. The phone arrived sooner than I expected and was packed really well to make sure it didn't get damaged during delivery. It was clear the seller took good care in getting it ready to send. The refurbished Samsung S21 Ultra itself is fantastic. It works perfectly, and you wouldn't even know it's refurbished because it looks brand new. The seller did an excellent job fixing it up. Overall, my experience with this seller has been great. They offer fantastic customer service, a high-quality refurbished product, and an easy buying process. I recommend them if you're looking for a refurbished Samsung S21 Ultra or any electronics. They deserve five stars!
M**N
Great phone apart from focusing issues
What a shame such a great, feature packed and fast phone is ruined by the almost useless camera. It just won't focus. Be it still images or videos it really struggles to hold focus on anything. So many great moments have been lost or ruined because of this. I see from the internet that many other users have had problems with it. Come on Samsung, you can do better than this.
F**I
Order met expectations
The phone met expectations as advertised. 👌
D**D
Top-Smartphone mit brillanter Kamera, starkem Display und Premium-Verarbeitung
Ich nutze das Samsung Galaxy S21 Ultra nun seit einigen Wochen als Hauptgerät und bin beeindruckt, wie durchdacht und leistungsstark es ist. Schon beim Auspacken merkt man, dass hier Premium-Qualität steckt: edles, mattes Glas auf der Rückseite, massives Aluminiumgehäuse und ein beeindruckend scharfes Display. Der 6,8-Zoll-Bildschirm ist eines der Highlights – extrem hell, gestochen scharf und mit 120 Hz butterweich beim Scrollen. Farben wirken lebendig, aber nicht übertrieben. Besonders angenehm: Das adaptive Refresh-Rate-System spart spürbar Akku im Alltag. Die Kamera gehört zu den besten, die ich bisher genutzt habe. Der Zoom ist dank der beiden Teleobjektive (3× und 10× optisch) erstaunlich stabil und detailreich. Auch bei wenig Licht liefert die Hauptkamera natürliche, rauschfreie Bilder. Der Autofokus ist schnell und zuverlässig, Videos wirken professionell. Leistung und Akkulaufzeit sind auf sehr hohem Niveau. Selbst bei intensiver Nutzung (Navigation, Social Media, Kamera, Streaming) komme ich problemlos durch den Tag. Laden geht schnell – auch wenn Samsung kein Netzteil mehr beilegt, funktioniert jedes Power Delivery Ladegerät einwandfrei. Kleine Kritikpunkte: Das Gerät ist recht groß und schwer, was Einhandbedienung erschwert. Außerdem wird es bei längerer Kamera- oder Spiele-Nutzung leicht warm. Trotzdem überwiegen klar die positiven Seiten. Fazit: Ein echtes Spitzen-Smartphone mit exzellenter Kamera, tollem Display und starker Performance – perfekt für alle, die keine Kompromisse wollen.
S**A
Ottimo peccato che è durato poco
Dispositivo da 6 stelle, purtroppo da un momento all'altro mentre leggevo un messaggio è comparsa una barra verticale lungo lo schermo a destra della fotocamera frontale, richiesta la sostituzione il venditore, molto cortesemente, rispo de che non è loro politica la sostituzione ma previo verifica dei loro tecnici, rimborso a seguto del reso
T**Y
Parfait sous tous les points
Produit en parfait état, on ne dirait pas que c'est un produit reconditionné. Je suis réellement satisfait. L'emballage était également parfait! Je recommande sans soucis ce vendeur. Ps: une protection d'écran est installée et une coque est fourni également. Par contre ce n'est pas une version européenne comme écrit dans l'annonce!
B**E
😒
Reçu tactile ne répond plus au bout de 2 jours
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1 month ago
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