Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Gray
User rating, 4.5 out of 5 stars with 128 reviews.
4.5(128 Reviews)- 24 Expert Reviews
- 41 Answered Questions
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Description

Benefits of unlocked phones.
Learn more about why you may want an unlocked phoneFeatures
Life moves fast. S21 moves faster.
Transform your story sharing, live streaming, video-editing and multi-tasking with hyperfast processor speeds (Compared to GS20)
Universal Unlocked
Compatible with all major U.S. carriers, including Verizon, AT&T, Sprint, and T-Mobile. Also compatible with prepaid carriers, including Cricket Wireless, Boost Mobile, MetroPCS, Simple Mobile, Total Wireless, Tracfone, Net10, Mint, and H2O.
Connectivity built for today. And tomorrow.
Built with 5G connectivity in mind, you can share, scroll, browse and binge in a flash(1).
A camera so good, everyone’s a pro
Zoom in close, take photos and videos like a pro, and capture incredible share-ready moments with our easy-to-use, multi-lens camera.
Trust us, you'll look amazing in 8K video
A night out. Your best friend’s birthday party. Family moments you’ll want to remember forever. Capture your life’s best moments in head-turning, super-smooth 8K video.
Movie-making magic in the palm of your hand
Slide into the director’s chair and create share-ready videos on the spot with multi-cam recording and automatic pro-style effects.
Spontaneity, now captured from multiple angles
Create share-ready GIFs and videos in a single take(2) or pick your favorite moments and pull your favorite stills in super high-res to share with your followers.
It’s real life. But in really high-resolution.
If beauty is in the details, you’ve got plenty of it here. 64MP high resolution captures everything with share-ready clarity.
Pinch, zoom, and you’re there
Too far? No such thing with 30x Space Zoom. Get more stability with Zoom Lock and never lose your focus.
Easy on the eyes — day or night or somewhere in between
Our 6.2" adaptive 120Hz display makes scrolling feel faster and silky smooth while also being easy on the eyes. Outside, inside, day or night (Compared to 60Hz screens).
All your photos are keepers. So keep ‘em.
Every moment matters. Hold on to them with S21 5G’s extensive built-in storage (4).
All day battery, and then some(5). No charging(6).
Power every scroll, click, tap, and stream all day long and then some(5) with an intelligent battery that works with you, not against you.
A striking new phone design — may cause phone envy
Modern haze finishes with an all-new integrated metal camera design and our toughest glass on a smartphone. Groundbreaking — it’s a vibe. And it looks good on you.
(1)Requires optimal 5G network connection, available in select markets. Check with your carrier for availability and details. Download and streaming speeds may vary based on content provider, server connection and other factors.
(2)Single Take captures images and video up to 15 seconds.
(3)Compared to GS20
(4)S21 available in 128GB and 256GB.
(5)Based on average battery life under typical usage conditions. Average expected performance based on typical use. Actual battery life depends on factors such as network, features selected, frequency of calls, and voice, data, and other application usage patterns. Results may vary.
(6)Charger not included; use only Samsung-approved chargers and cables; do not use any worn or damaged chargers or cables; incompatible charger or cable can cause serious injuries or damage to your device.
* SIM Card not included.
Key Specs
- Voice Assistant Built-inBixby
- CarrierUnlocked
- Wireless Technology2G, 3G, 4G, 5G
- Operating SystemAndroid 11
- Internal Memory128 gigabytes
- Screen Size6.2 inches
- Water ResistantYes
- Phone Memory (RAM)8 gigabytes
- Processor BrandQualcomm
- Front-Facing Camera10 megapixels
- Rear-Facing Camera12 megapixels
- SeriesSamsung Galaxy S21
General
- Product NameGalaxy S21 5G 128GB (Unlocked)
- BrandSamsung
- No-ContractYes
- Device ManufacturerSamsung
- Phone StyleSmartphone
- Model NumberSM-G991UZKAXAA
- SeriesSamsung Galaxy S21
- ColorPhantom Gray
- Color CategoryGray
Compatibility
- Voice Assistant Built-inBixby
- Bluetooth EnabledYes
- Model FamilySamsung Galaxy S21 5G
- Carrier CompatibilityAT&T, Sprint, T-Mobile, US Cellular, Verizon
Features
- UnlockedYes
- Maximum Depth Of Water Resistance4.9 feet
- Voice ActivatedYes
- Ingress Protection (IP) RatingIP68
- Wireless ChargingYes
Display
- Touch ScreenYes
Imaging
- Integrated CameraYes - Front and Back
Network
- Universal UnlockedYes
- Wireless CompatibilityBluetooth, Wi-Fi
- Network TypeGSM
Dimension
- Product Weight6.03 ounces
Warranty
- Manufacturer's Warranty - Parts1 Year Warranty
- Manufacturer's Warranty - Labor1 Year Warranty
Other
- Internal CarrierNot Applicable
- UPC887276473468
Customer rating
Rating 4.5 out of 5 stars with 128 reviews
(128 Reviews)Expert rating
Rating 4.3 out of 5 stars with 24 reviews
(24 Reviews)Customer images
Search
Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
great phone, check the pics i took with it below
|Posted .Owned for less than 1 week when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5definitely a great phone with a great battery! the 30x zoom is nice for shots of the moon or maybe some star shots although i personally don't do that. the whole UI is normal and easy to use as to be expected and the build quality of the device is great. it's definitely worth it if you need to upgrade and the 120hz is definitely pleasing to my eyes.
Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
Upgrade to the Galaxy S21 5G
|Posted .Owned for 1 week when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Sales Rep was outstanding and she really knew everything I needed to know about the new Galaxy S21 5G Phone. She allowed a discount for my Galaxy S20 Phone that I was able to turn in. The Galaxy S21 5G is a far superior phone to the Galaxy S20. Samsung made a lot of improvements for the S21 and having 5G makes a big difference. Also battery life is longer than the S20 and much faster for charging.
Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
Incredible Camera
|Posted .Owned for less than 1 week when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Best phone i ever bought, Unlocked is the way to go buy one today!!
This review is from Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Violet
Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
Price
|Posted .Owned for 2 weeks when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I loved the price, and how functional and modern it is. i love my phone
This review is from Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Violet
Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Quality1 out of 5Value1 out of 5Ease of Use1 out of 5Rating 1 out of 5 stars with 1 review
Bestbuy gave me OPEN BOX for BRAND NEW order
|Posted .Features
Quality1 out of 5Value1 out of 5Ease of Use1 out of 5I ordered a brand new white S21 yesterday on Bestbuy and chose to curbside pickup at Bestbuy store located at 1717 Harrison St,SF. When I received the box in my car, I found the box looks dusty and has tape marks on top of the box, I thought it’s just because of the box been moved around so I opened the S21 box. After opening it I found a broken QR code on the side of the box(it’s covered and hidden when handed to me), there is also a lot of dust on the back of this phone which should not happen, also the packaging of the instruction and charging cable is a bit worn. I immediately realized it’s a USED phone and went to store for changing! The mobile department manager doesn’t believe it’s a used S21 at the beginning but did a search in Bestbuy system and found this phone was indeed SOLD a couple days ago and got RETURNED, then someone restocked it as a BRAND NEW and sent to me. It’s a shame. My order was refunded in the end as they have no brand new white S21 in stock. I placed another order to deliver to my home today, hope it’s a brand new one this time... I really like the look of S21 btw.
This review is from Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom White
Features
Quality1 out of 5Value1 out of 5Ease of Use1 out of 5No, I would not recommend this to a friendFeatures
Quality1 out of 5Value1 out of 5Ease of Use5 out of 5Rating 1 out of 5 stars with 1 review
Worst Flagship Phone to Exist
|Posted .Owned for less than 1 week when reviewed.Features
Quality1 out of 5Value1 out of 5Ease of Use5 out of 5I am so insanely furious about this phone. I got one on February 9th, an open box to be exact. By the 21st the lower speaker stopped working, and more concerning, the SIM card continued to eject while still firmly in the phone which reminds in the case. They replaced it under the 14 day exchange policy on February 22. Now today, the 24th...SIM card is ejecting again...This makes me want to go to Apple...This is a flagship phone from one of the largest cellphone manufacturers in the world, and it is complete garbage...Best Buy will be seeing me today or tomorrow to cough up another phone...
Features
Quality1 out of 5Value1 out of 5Ease of Use5 out of 5No, I would not recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
A Great Upgrade from S9
|Posted .Owned for less than 1 week when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5I'm really enjoying this upgrade from an S9 to the S21. I prefer the flat screen of the S21 over the curved screen of the S9. The screen is still beautiful, and the VRR 120Hz looks much smoother than the 60Hz of the S9. I also like the buttons only on 1 side of the phone. Transferring Apps and Data was quick and easy via the included cable. No real learning curve for the new phone. Does have the option to move to gestures if you choose that route. 128 GB works well for me. Fast & Responsive Cameras are a real upgrade both the back and selfie. Cons: No wall charger. Additional cost getting a fast charger. No SD card slot. The increased base storage works for me, but it would have been nice to have it. Screen seems a little less bright, but only a marginal difference. Finger print scanner is less reliable and takes a little longer than the S9. It works well enough, even with a thick screen protector.
I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Features
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5Rating 5 out of 5 stars with 1 review
Amazing battery life
|Posted .Owned for 1 week when reviewed.Features
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5I purchased this phone to replace an aging Samsung S7 phone. Staying within the Samsung family made it very easy to transfer my contacts, messages, texts, emails and more. The only downside was that the saved passwords did not transfer for the apps. I have had this phone for a little over a week and am still discovering new features. The greatest feature so far is the battery. I am on my second day since the last charge and I still have 59% battery life left. I should also point out that I get a stronger signal and am getting 5G where I live in rural Southern Wisconsin. I haven’t put the camera to a full test but I will in the coming days and weeks.
I would recommend this to a friendFeatures
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5
Rating 4.3 out of 5 stars with 24 reviews
(24 Reviews)- TechRadarRating, 4 out of 54.0James Peckham on March 1, 2021Samsung Galaxy S21 reviewThe Galaxy S21 isn't the premium, top-end handset in Samsung's 2021 lineup, but it's still a phenomenal smartphone that does a lot right.Full Review
- TechRadarMatt Swider on January 20, 2021Hands on: Samsung Galaxy S21 reviewYou don't have to wait for the Galaxy S21, and you don't have to pay a lot of money for it either. Here's our take on Samsung's latest flagship smartphone.Full Review
- GizmodoSam Rutherford on January 29, 2021Samsung Galaxy S21 Review: The High-End Android Phone to BuyIf you're thinking about buying a high-end Android phone, it's hard to imagine why you'd buy anything other than the Galaxy S21.Full Review
- The VergeRating, 4 out of 54.0Dieter Bohn on January 27, 2021Samsung Galaxy S21 review: nice for the priceMore than a refreshed Galaxy S20, but not by much.Full Review
- Tom's GuideRating, 4 out of 54.0Roland Moore-Colyer on April 6, 2021Samsung Galaxy S21 reviewThe Samsung Galaxy S21 delivers better cameras, faster performance and a sleeker design for a lower price, but there's some trade-offs.Full Review
- Digital TrendsAndrew Martonik on January 21, 2021Samsung Galaxy S21 review: Right recipe, wrong ingredientsThe Galaxy S21 makes a smart bet on value with a lower starting price, but in many ways feels stuck in 2020. A good phone, but not a particularly exciting one.Full Review
- Android AuthorityRating, 4 out of 54.0C. Scott Brown C. Scott Brown on January 21, 2021Samsung Galaxy S21 review: It's a great Honda, not a great MercedesIn our Samsung Galaxy S21 review, we'll tell you about how this phone's value is its biggest strength. It's a great Honda, not a Mercedes.Full Review
- PCWorldRating, 4.5 out of 54.5Michael Simon on January 28, 2021Samsung Galaxy S21 review: A premium phone that's a great valueThe Samsung Galaxy S21 isn't a huge upgrade over the S20, but it makes smart sacrifices to reach its best price in yearsFull Review
Q: QuestionI was looking at the unlocked version but will it work on the Verizon network? I hate all the bloatware that Verizon adds.
Asked by Bradley.
- A:Answer Yes it will. I purchased the S21 unlocked and Best Buy got me linked with my Verizon account within a few minutes.
Answered by GeorgeB
Q: QuestionCan this unlocked phone be used with Consumer Cellular?
Asked by OldMiss007.
- A:Answer You can connect this phone with any company
Answered by new3775
Q: QuestionAre these unlocked refurbished phones? or are they new?
Asked by Anonymous.
This question was asked about the related product: Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Violet- A:Answer It's brand new and unlocked. I bought it from Best Buy to hook up on my Tmobile service. All I had to do was put my Sim card from my old phone into this S21. If you need any help just ask the Best Buy team members. I asked them every question twice to be sure I would be able to use it with my Tmobile service.
Answered by Peachykeen
Q: QuestionThe cell phone works in the region of Mexico and is compatible with companies such as telcel?
Asked by Amintcio.
- A:Answer That is a great question, Amintcio. If a phone comes unlocked, you have the option of which carrier's service is connected to the device. We would suggest contacting the carrier to ensure their services can be added. Thank you for asking this question. ^Kayla
Answered by Samsung
Q: QuestionHi. I would like to know if this phone work for metro pcs
Asked by Anna.
- A:Answer Hey, Anna. If a phone comes unlocked, you have the option of which carrier's service is connected to the device. We would suggest contacting the carrier to ensure their services can be added. Thank you for asking this question. ^Kayla
Answered by Samsung
Q: QuestionCan I trade in with my Samsung galaxy s10
Asked by Toto.
This question was asked about the related product: Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Violet- A:Answer Yes I did
Answered by Shep
Q: QuestionWhat comes in the box with Galaxy S21 5G unlocked phone ?
Asked by viaggio.
- A:Answer All 21 models only comes with a power cord, no wall adaptor or headphones since samsung got rid of thw headphone jack with the 20 models
Answered by Battlecall922
Q: QuestionDoes this phone work with spectrum?
Asked by Taylor.
This question was asked about the related product: Samsung - Galaxy S21 5G 128GB (Unlocked) - Phantom Pink- A:Answer Hey there, Taylor. If a phone comes unlocked, you have the option of which carrier's service is connected to the device. We would suggest contacting the carrier to ensure their services can be added. Thank you for asking this question. ^Kayla
Answered by Samsung
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