Samsung - Galaxy A51 with 128GB Memory Cell Phone (Unlocked) - Prism Crush Black
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Description

Benefits of unlocked phones.
Learn more about why you may want an unlocked phoneFeatures
Octa-core 2.3GHz processor with 4GB of RAM
Delivers outstanding overall performance for opening and running applications, flipping through menus, running home screens and more.
Universal unlocked
Compatible with all major U.S. carriers, including Verizon, AT&T, Sprint, and T-Mobile. Also works with prepaid carriers, such as Cricket Wireless, Boost Mobile, MetroPCS, Simple Mobile, Total Wireless, Tracfone, Net10, Mint, and H2O.
4G LTE speed
This smartphone provides fast web connection for downloading apps, streaming content, and staying connected on social media.
Quad-camera setup
The 48.0MP main camera takes beautiful pictures even in low light, 12.0MP ultrawide lens captures landscape shots, all-new 5.0MP macro lens provides intricate textures and details, and 5.0MP depth camera puts your friends and family into focus for perfect portrait shots.
Super AMOLED 6.5" Infinity-O display
Lets you dive into the edge-to-edge color and detail with a large playground for everything you touch.
128GB internal memory plus microSD slot
Provides plenty of storage space for your videos, music, apps and more. Expand your storage by up to 512GB by adding a microSD card (sold separately).
Android 10
A custom operating system for Android phones that delivers easy app usability and responses.
Super Steady OIS mode
Helps you make photos and videos look smooth without all the blur.
In-display fingerprint sensor
Unlock your phone with just a touch. No staring contests with your screen or complicated passcodes required.
* SIM card not included.
What's Included
- Samsung Galaxy A51 with 128GB Memory Cell Phone (Unlocked)
- 4000 mAh Battery
- Power adapter
- Owner's manual
Manuals & Guides
- Product Datasheet/Brochure (PDF)
Key Specs
- CarrierUnlocked
- Wireless Technology2G, 3G, 4G LTE
- Operating SystemAndroid 10
- Processor Speed2.3 gigahertz
- Internal Memory128 gigabytes
- Screen Size6.5 inches
- Water ResistantNo
- Phone Memory (RAM)4 gigabytes
- Processor BrandSamsung
- Front-Facing Camera32 megapixels
- Rear-Facing Camera48 megapixels
- Processor ModelOcta core
- Internet ConnectableYes
- SeriesGalaxy A51
General
- Product NameGalaxy A51 with 128GB Memory Cell Phone (Unlocked)
- BrandSamsung
- No-ContractYes
- Device ManufacturerSamsung
- Additional Hardware IncludedPower adapter
- Phone StyleSmartphone
- Model NumberSM-A515UZKNXAA
- SeriesGalaxy A51
- ColorPrism Crush Black
- Color CategoryBlack
Features
- UnlockedYes
- Email CapableYes
- Keyboard TypeTouch Screen
- Media Card SlotmicroSD
- Mobile Hotspot CapabilityYes
- Built-In GPSYes
- SensorsAccelerometer, Ambient light sensor, Fingerprint sensor, Geomagnetic sensor, Gyro sensor, Hall effect sensor, Proximity sensor
- Voice ActivatedYes
- Mobile Payment Service SupportedSamsung Pay
- Wireless ChargingNo
- Social Media and Messaging ServicesSMS, MMS
- Dust ResistantNo
- Headphone JackYes
Display
- Display TypeSuper AMOLED
- Screen Resolution2400 x 1080
- Touch ScreenYes
Imaging
- Integrated CameraYes - Front and Back
- Recording Resolution1920 x 1080
Power
- Battery Capacity4000 milliampere hours
- Charging Interface Generation/Version2.0
Compatibility
- Bluetooth EnabledYes
- NFC TechnologyYes
- Charging Interface(s)USB Type C
- Model FamilySamsung Galaxy A51
- Expandable Memory up to512 gigabytes
- SIM Card SizeNano SIM
- SIM Card SlotsSingle SIM
- Carrier CompatibilityAT&T, Boost Mobile, Cricket, H2O Wireless, MetroPCS, Mint Mobile, Net10, Simple Mobile, Sprint, T-Mobile, TRACFONE, Total Wireless, Verizon
Network
- Universal UnlockedYes
- Wireless CompatibilityBluetooth, Wireless A, Wireless AC, Wireless B, Wireless G, Wireless N
- Network TypeCDMA, GSM
- 4G LTE Band1, 12, 13, 14, 2, 20, 25, 26, 28, 29, 3, 30, 38, 39, 4, 40, 41, 5, 66, 7, 71, 8
- GSM 2G Frequency1800, 1900, 850, 900
- CDMA 3G Frequency1900, 2100, 800, 850
- 4G LTE Frequency1800, 1900, 2100, 2300, 2500, 2600, 700, 800, 850, 900
Dimension
- Product Height6.24 inches
- Product Width2.89 inches
- Product Depth0.31 inches
- Product Weight6.07 ounces
Warranty
- Manufacturer's Warranty - Parts1 year
- Manufacturer's Warranty - Labor1 year
Other
- Internal CarrierNot Applicable
- UPC887276410463
Customer reviews
Rating 4.4 out of 5 stars with 633 reviews
(633 customer reviews)Rating by feature
- Display Quality4.6
Rating 4.6 out of 5 stars
- Camera4.3
Rating 4.3 out of 5 stars
- Battery Life4.4
Rating 4.4 out of 5 stars
to a friend
Features
Value5 out of 5Quality4 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Excellent phone for the money
||Posted .Owned for 2 weeks when reviewed.I bought the Galaxy A51 after my Galaxy S5 Active all of the sudden died (after at least 5 years). I did not want to pay $1K for one of the flagship Samsung phones, so I bought the Galaxy A51 outright (AT&T). I was back & forth between the Galaxy A51 and the Google Pixel 4a (same price $349). After looking at both, I went with the Samsung - the Pixel 4a doesn't allow for a MicroSD card, and per reviews doesn't have a dedicated "back" button. Also, there's an obvious size difference. Pros: - Supports a MicroSD card (the Pixel 4a does not) and the phone comes with a SIM/MicroSD card slot tool, for replacement. Which was a nice touch, not having to dig for a paper clip or thumb tack. - Battery life -- I've seen some reviews critical of the battery life, but to me the battery has been exceptional. I get at least 24 hours on my battery (screen brightness at 30% which is well enough for me & have the "dark theme/mode" enabled, I also am not utilizing Samsung apps: Bixby/Free/Edge). And I'm on Twitter/Email/Slack constantly. - Camera -- Great main camera... great resolution on regular pics & excellent zoom, great panoramic pics, decent resolution on videos. The front facing (selfie) camera is also good - good resolution & has easy selfie picture function. - It does have an earphone jack (as does the Pixel 4a), which is a must for me. More on that below. Cons: - No "hard" buttons at the bottom for: apps/home/back, like my previous Galaxy S5 Active had. For me personally, the soft/touch screen buttons will take some getting used to, but for others it's probably not a big deal. Just my personal preference. (To note: I've read reviews where the Pixel 4a does not have a back button, you have to swipe) - The default wallpaper and icons (phone/text/camera/pics) are quite "cartoonish" or childish looking (pictures attached). The app icons looked nothing like my 5 year old Galaxy S5 icons & wallpaper. There are free themes/wallpapers/icons you can download, but out of the box it's a disappointment. But, for a budget phone I can live with it. Other observations: - Obviously, it comes preloaded with all of the Google apps, some Microsoft Office apps, which I use. And of course some of the Samsung bloatware apps, but that hasn't been a problem for my usage or battery life. I had to set Chrome as the default browser, instead of Samsung's native browser. - On phone calls, unless you hold the phone close to your ear/face in "just the right way"... the touchscreen will re-engage - which could have the potential for your cheek to hang up on the call. It hasn't happened to me yet, but I've noticed it's very particular about how you hold the phone while on a call. - The earphone jack is located on the bottom (versus at the top for my previous Galaxy S5 & the Pixel 4a). First phone I've had that had it at the bottom... but after some usage, I'm getting used to it - if you have headphones wired in & put your phone in your pocket "top down" it makes sense. - I've already dropped the phone onto concrete from about 2 feet high, luckily no damage. I have the $20 UAG case from Best Buy, which is more firm rubber than the $30 UAG case. The $20 UAG case makes it a bit harder to press the volume & 'action' buttons on the side, so consider the $30 UAG case which is softer & should allow for easier pressing of the side buttons. All in all, this is an excellent phone for the money. I would definitely buy again, and recommend to anyone not wanting to drop $1K on a phone.
Features
Value5 out of 5Quality4 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Great phone
||Posted .Owned for 4 months when reviewed.I bought this phone for my husband, was a gift, and he is love it.
Features
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Impressive machine.
||Posted .Owned for 1 week when reviewed.I broke my Galaxy S10+ and I wanted to go crazy. Prices skyrocketed for some reason and I had to go through insurance which took a while. I went and purchased this phone and I do not regret it at all. Honestly, with phones like this, there may never be a need to buy flagships again. It does only have 4gb RAM and it can be noticeable especially with the apps I pack and "multitasking" I do being a full-time student with a small business. I was able to get a replacement for my original phone, but if I hadn't I wouldn't have been mad. This phone is beautiful on the outside, and impressive on the inside. An almost comparable battery to the S10+, a decent sized screen, with the upgraded cameras, at the incredible price?! Tired of ridiculously priced phones? Want something affordable without feeling embarrassed? Buy this phone.
Features
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value4 out of 5Quality4 out of 5Ease of Use4 out of 5Rated 4 out of 5 stars
Bang for the buck!
||Posted .Owned for 7 months when reviewed.I was so delighted that this decidedly kicked my just broken glass Galaxy s8+ which I was using straight to the gutter. Well, yes, the price I paid for the S class versus Samsungs new midrange price A series makes this phone perfect for somone who needs a: Brand new phone with practically the newest features in regards to much better cameras twice the memory and much larger batteries Realized that at the time the S class had increased 300 dollars more from the 3 years prior version, making a phone that was 850 dollars to increase that much for the same line of phone (the best of the Samsungs you can get with the perks) was very unreasonable at the time. 5G phones had just started coming out and unless you're a 1% who maybe can get it at a location in new york city on a block now, you will be waiting awhile before we can have 5g as a function that is practical. This phone was 4g and if I wanted to buy something I can't use it would be outdated by the time I could which is pointless. That makes this a midrange phone by knocking off that for example, because it would need a processor that has minimum requirements and is expensive to use 5g. Need a phone that has the latest operating systems and as much storage as the high end phones...you can't go wrong there. Battery lasts long as the newest ones and has the same amount of charge. Haven't had any issues including errors crashes bugs or anything so I have never had to question anything review material or call support. Its perfect for someone who wants to be able to do everything basically the top end phones can without having just some of the things that shouldn't make you blink unless you're a junky who needs a bleeding edge product.
Features
Value4 out of 5Quality4 out of 5Ease of Use4 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Happy with phone, Unhappy with the salesperson!
||Posted .Owned for 1 week when reviewed.This was my second choice phone but, even though it isn't 5G (which you don't get everywhere yet anyways) i am very satisfied with it. The speed screen quality and the camera alone were worth the money. Though I wasn't happy with the service I received from Best Buy! The kid actually argued with me when I returned the Motorola On 5G Ace and I told him Verizon prepaid told me it wasn't compatible for their network. His arrogance and know it all attitude almost made me just leave the store and just buy my current phone straight from Samsung. I am very happy with this Samsung A51. My next purchase will be the Samsung Watch 3, though, I don't think I'll be going to Best Buy to.purchase it, that salesperson just left a bad taste in my mind, I mean leave the attitude at home when you're dealing with a customer service type job.
Features
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Fantastic Phone for Beginners!
||Posted .Owned for less than 1 week when reviewed.I bought this phone for my mom last week when her old Motorola suddenly stopped working. She did not need too many functions but likes to take pictures so I picked this phone. I was a bit hesitant to begin with since there's only 1 five-star review at the time but I'm glad I decided to take the risk. The phone is very slim, classy in appearance, and easy to setup and use. Also, the current sale price accompanied by 128GB is phenomenal. Overall, my mom loves her new phone. My only complaint is the dimension of the phone is longer than my current S7 and I worry it might drop out of my pocket since I have a habit of using it as a wallet instead of carrying a purse. It's a tough decision.
Features
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Great mid level phone
||Posted .Owned for 3 weeks when reviewed.For the first time I don't have to deal with all the bloatware that the major carriers install on the phones bought through them, this unlocked phone is awesome. My previous phone was an S7 Active which served me well but I wanted to upgrade to an unlocked phone to switch to Mint Mobile(which was an excellent choice) from AT&T. Since I had a Samsung account it was easy to transfer everything over through the cloud, same thing with Google transferring stuff over as well. I would recommend getting an ArmadilloTek case for it off of Amazon, it's a nicely designed case and the material has good grip so it stays in your hands. It does NOT come with a screen protector though so that will need to be purchased as well.
Features
Value5 out of 5Quality5 out of 5Ease of Use5 out of 5I would recommend this to a friendFeatures
Value5 out of 5Quality4 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
This is a great phone.
||Posted .Owned for 2 weeks when reviewed.If you are looking for a flagship quality phone for around $500 less this is your phone. I would warn that it is thin, slippery, and somewhat fragile, so don't go crazy with it until you have a good quality case and a tempered glass screen protector installed. speakers are so-so but does sound great with headphones. so far as i can tell the only things a flagship phone will do that this won't is to wireless charge, or drop in 5 feet of water. if you can live with that, save your money and get this phone.
Features
Value5 out of 5Quality4 out of 5Ease of Use5 out of 5I would recommend this to a friend
Q: QuestionDoes this work with Boost Mobile?
Asked by Dewey.
- A:Answer Yes, it works with Boost Mobile.
Answered by CommunityAnswer
Q: QuestionWhat is the memory?
Asked by Robby.
- A:Answer Hello Robby, thanks for asking! This phone has 128GB internal memory with 105.9GB available memory. It also has an expandable memory with a MicroSD (Up to 512GB). ^Elizabeth
Answered by Samsung
Q: QuestionWill this work with Verizon?
Asked by Melv.
- A:Answer Yes, it will work with Verizon.
Answered by CommunityAnswer
Q: Questionwill the phone work with metro pcs?
Asked by ellie.
- A:Answer Yes the A51 works great with metro pcs.
Answered by Nd18
Q: QuestionAre this phone works with cricket
Asked by Bcb.
- A:Answer Yes, this phone will work with Cricket.
Answered by CommunityAnswer
Q: QuestionDoes this phone work with T-Mobile?
Asked by Blades.
- A:Answer yes, it works fine.
Answered by hitesh
Q: QuestionDoes this phone have removable battery?
Asked by GG.
- A:Answer No it doesn't have removable battery.
Answered by Candy
Q: QuestionThis would be work with straight talk?
Asked by Ali.
- A:Answer Yes, this will work on Straight Talk. If you have the AT&T or T-Mobile SIM it should be simply plug and play. Technically it should also work on the Straight Talk Verizon SIM's as well, but some people have noted issues getting it to work properly with the Verizon network while others have had no issues, so YMMV.
Answered by acejavelin