Skip to content
Main Content
No content

Samsung - Galaxy S24 256GB (Unlocked) - Onyx Black

Model:SM-S921UZKEXAA
SKU:6569842

Carrier

Unlocked
If you change your selection, the current page will be refreshed.

Model Family

Samsung Galaxy S24
If you change your selection, the current page will be refreshed.

Color

Onyx Black
If you change your selection, the current page will be refreshed.
Your price for this item is $859.99

Trade-In and Save

Save up to $230.00 when you trade in a similar device.

Check your trade-in value.

No content
Sold Out
No content
falsefalseNULL
Sold Out
No content
Specifications
  • Key Specs

    Screen Size
    6.2 inches
    Front-Facing Camera
    12 megapixels
    Rear-Facing Camera
    50 megapixels
    Telephoto Camera 1
    10 megapixels
    Ultrawide Camera
    12 megapixels
    Series
    Samsung Galaxy S24
  • General

    Product Name
    Galaxy S24 256GB (Unlocked)
    Brand
    Samsung
    Model Number
    SM-S921UZKEXAA
    Series
    Samsung Galaxy S24
    Year of Release
    2024
    Color
    Onyx Black
  • Display

    Screen Size
    6.2 inches
    Screen Resolution
    2340 x 1080
    Display Type
    OLED
    Screen Type
    AMOLED
    Screen Material
    Victus 2
    Foldable Screen
    false
    Refresh Rate
    120Hz
    Brightness
    2600 nits
  • Camera

    Integrated Camera
    Front, Rear, Telephoto 1, Ultrawide
    Front-Facing Camera
    12 megapixels
    Rear-Facing Camera
    50 megapixels
    Telephoto Camera 1
    10 megapixels
    Ultrawide Camera
    12 megapixels
    Video Recording Resolution(s) and Frame Rate(s)
    120 fps frame rate 7680 x 4320 (8K) recording resolution
    Optical Zoom
    3x
    Digital Zoom
    30x
    High Dynamic Range (HDR)
    true
  • Network

    Carrier
    Unlocked
    Carrier Compatibility
    AT&T, Boost Mobile, Cricket, H2O Wireless, Metro by T-Mobile, Mint Mobile, Simple Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, Google Fi
    Network Connectivity
    5G, 4G, 4G LTE, GSM
    Unlocked
    true
    Mobile Hotspot Capability
    true
  • Connectivity

    Headphone Jack
    false
    Wireless Connectivity
    Bluetooth, Wi-Fi, NFC
  • Power

    Battery Capacity
    4000 milliampere hours
    Wireless Charging
    true
    Wireless Charging Standard
    Qi
    Fast Charging Capability
    Wired, Wireless
    Fast Charging Technology
    Adaptive Fast Charging
    Wired Charging Wattage
    25 watts
    Wireless Charging Wattage
    11 watts
    Device Power Sharing
    Wireless
    Battery Chemistry
    Lithium-ion
  • Compatibility

    Charging Interface(s)
    USB-C
    Voice Assistant Built-in
    Bixby, Google Assistant
    Works With
    Amazon Alexa, Arlo, Bixby, Google Assistant, Hue, Nest, Ring, SmartThings
    SIM Card Size
    Nano SIM
    SIM Card Slots
    Single SIM
    Stylus Dock
    None
    Stylus Included
    false
  • Features

    Model Family
    Samsung Galaxy S24
    Usage Time(s)
    Internet Usage Time (LTE) Up to 25 hours, Internet Usage Time (Wi-Fi) Up to 25 hours, Audio Playback Time Up to 72 hours, Video Playback Time Up to 28 hours
    Sensors
    Accelerometer, Ambient light sensor, Barometer, Geomagnetic sensor, Gyro sensor, Hall effect sensor, Proximity sensor
    GPS Enabled
    true
    Global Positioning
    GPS, GLONASS, BeiDou (BDS), Galileo
    Mobile Payment Service Supported
    Google Pay, Samsung Pay
    Protective Qualities
    Dust resistant, Shock resistant, Water resistant
    Maximum Depth Of Water Resistance
    5 feet
    Ingress Protection (IP) Rating
    IP68
    Security Features
    Facial recognition, Fingerprint reader, Passkey
    Supported File Formats
    Video:MP4, M4V, 3GP, 3G2, AVI, FLV, MKV, WEBM, Audio:MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR and more
    Built-in Storage
    256 gigabytes
  • AI

    AI Processing
    Cloud-based
    AI Photo/Video Capture Features
    Brightness adjustment, Depth adjustment, Facial recognition
    AI Photo/Video Editing Features
    Adjust background, Adjust image, Adjust objects, Image story creation, Remove objects, Reposition objects, Resize objects
    AI Document and Search Features
    Document summary, Transcription
    AI Translation
    Language translation, Speech recognition, Speech-to-text, Text-to-speech
  • Performance

    Operating System
    Android 14
    Processor Brand
    Qualcomm
    Processor Model
    Snapdragon 8 Gen 3 for Galaxy
    Processor Speed
    3.4 gigahertz
    Phone Memory (RAM)
    8 gigabytes
  • Dimensions

    Product Height
    5.78 inches
    Product Width
    2.77 inches
    Product Depth
    0.29 inches
    Product Weight
    5.92 ounces
  • Storage

    Media Card Slot
    None
  • Warranty

    Manufacturer's Warranty - Parts
    1 year
    Manufacturer's Warranty - Labor
    1 year
  • Other

    UPC
    887276802589
Features

Make every day epic with Galaxy AI on Galaxy S24. See a delicious looking dish on your social feed but don’t see a recipe? Simply Circle to Search with Google to find it in seconds. Then head to a sunny farmer’s market to pick up the ingredients and see your list clearly on the bright, adaptive display of Galaxy S24. Once the meal is ready, capture stunning close ups of your dish and dinner guests, no matter the lighting, with a high res camera and Nightography. And all the while, you can stay plugged into the moment, not the outlet, with a long lasting battery. Do more easily with Galaxy AI on Galaxy S24. Epic, just like that.

  • Circle it, search it, find it. Just like that.

    What’s your favorite influencer wearing? Where’d they go on vacation? What’s that word mean? Don’t try to describe it- use Circle to Search¹ with Google and get the answer in snap. With Galaxy S24, simply circle it on your screen and learn more.

  • What you see is what you get

    Share more of life’s most share worthy moments in natural, true to life color with 50MP camera.

  • Break down barriers to language barriers

    Speak foreign languages on the spot using Live Translate with Galaxy AI. Unlock the power of convenient communication with near real time voice translations, right through your Samsung Phone app.²

  • Go bigger. Go brighter

    See it all in stunning detail on the bigger and brighter screens³ of Galaxy S24. Look at your pics outside without squinting or looking for shade.

  • And wind down before bed with your screen at just the right brightness, thanks to Eye Comfort Shield. No matter where you are, see what you love clearly.

  • Note smarter, not harder

    Focus on capturing your notes and spend less time perfecting them. Note Assist⁴ with Galaxy AI will summarize, format, and even translate them for you. All of your notes are organized neatly so that you can find what you need when you need it.

  • Take a great photo. Then make it better.

    Turn every photo into a post worthy masterpiece. Move or remove objects. Fill in empty space. Simply snap a pic, and then take it from great to jaw dropping with Generative Edit⁵ powered by Galaxy AI.

  • Our powerful Galaxy smartphone

    Jump seamlessly between apps without the wait and see content in high quality with our fast processor, Snapdragon 8 Gen 3 for Galaxy⁶.

  • Put your best text forward

    Say the right thing at the right time in no time with Chat Assist⁵ with Galaxy AI on Galaxy S24. Get real time tone suggestions to make your writing sound more professional or conversational.

  • Plus, make typos a thing of the past. Focus on what you want to say, and let Chat Assist handle the rest.

  • The fun don’t stop with a drop

    Whether you’re running from meeting to meeting or running the trails, Galaxy S24 is tough enough to handle it.

  • The Armor Aluminum 2.0 frame and scratch resistant Gorilla Glass Victus 2 screen keeps your phone looking like new, no matter what your day throws your way.³

  • Focus on life. Not battery life.

    Stay charged and in charge when you level up to Galaxy S24. Experience an upgraded battery that’s optimized to last longer³ and work smarter with the apps you love.

  • Escape the outlet. Embrace the moment.

    Life’s best moments rarely happen near an outlet. With Super Fast Charging, you can get back to snapping selfies with friends, recording videos and posting it all.

  • To save or not to save? That’s a silly question.

    With Galaxy S24, there’s room for photos, apps and documents. Confidently save all your proudest highlights and bloopers and forget stressing about which files to delete.

  • Your phone? Your Watch? Your call.

    Conveniently keep your conversations going even while your Galaxy S24 phone stays in your pocket. Seamlessly sync your phone and Galaxy Watch in an instant, and enjoy the ease of answering calls and checking texts at a glance.

  • Pair up, tune in and carry on

    Enjoy the convenience of quickly connecting your Galaxy S24 phone and Galaxy Buds. Whether you’re on a call, playing games or listening to your favorite music, just pop in your Buds and keep enjoying whatever you’re doing without interruption.

What's Included

  • Galaxy S24 256GB

  • USB-C Cable

  • Sim Pin

  • Quick Start Guide

Questions & Answers (37)
  • Q: I would like to know what unlocked means? Never seen that before (3 answers)

    A: Hello Kona84, thank you for finding the available time out of your lively day to ask us your question about the Samsung Galaxy S24. Unlocked devices allow you the freedom to choose the wireless carrier that want to do business with without being locked into a service contract with them for the price of your device. The advertised unlocked Galaxy S24 is compatible with AT&T, Boost Mobile, Cricket, H2O Wireless, MetroPCS, Mint Mobile, Simple Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, and Verizon so you would have your choice among these carriers to provide your monthly service to your device after your purchase. Hope that helps answer your question. Feel free to reach out to Samsung Support if you would like any further assistance. Thanks for being a faithful Samsung customer. - Debra
  • Q: Does this product work with straight talk service? (5 answers)

    A: If they use a SIM card, it should work.
  • Q: Does the Samsung Galaxy S24 come with 512gb of storage? (1 answers)

    A: Hello there Camila, thank you for finding the available time out of your lively day to ask us your question about the Samsung Galaxy S24. No, the Galaxy S24 is offered with 128GB or 256GB of internal storage. Check out the Galaxy S24+ or the S24 Ultra if you're looking for more internal storage on your next device. If you have any other questions for us, feel free to reach out to Support. Thank you for being a steadfast Samsung customer. - Debra
  • Q: Does the 256gb version come with 8gb or 12gb ram? (2 answers)

    A: Howdy Jimmy, thanks for taking the available time out of your day to ask us your question about the Samsung Galaxy S24. The advertised Galaxy S24 (256GB) offers an 8GB RAM. Feel free to reach back out if you have any other questions for us. Thank you for being a valued Samsung customer. - Debra
  • Q: Does this phone work with Spectrum phone service (1 answers)

    A: Hey there Galaxys24, thank you for finding the free time out of your busy day to ask us your question about the Samsung Galaxy S24. The advertised unlocked Galaxy S24 is compatible with AT&T, Boost Mobile, Cricket, H2O Wireless, Metro by T-Mobile, Mint Mobile, Simple Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, Verizon, and Google Fi. Feel free to contact us with any other questions you may have. Thanks for choosing Samsung! - Debra
See All Questions
Sponsored

Compare similar products

This Product
Samsung - Galaxy S24 256GB (Unlocked) - Onyx BlackSamsung - Galaxy S24 256GB (Unlocked) - Onyx Black
See details
Samsung - Galaxy S24 FE 128GB (Unlocked) - GraphiteSamsung - Galaxy S24 FE 128GB (Unlocked) - Graphite
See details
Samsung - Galaxy S25 256GB (Unlocked) - NavySamsung - Galaxy S25 256GB (Unlocked) - Navy
See details
Samsung - Galaxy A35 5G 128GB (Unlocked) - Awesome NavySamsung - Galaxy A35 5G 128GB (Unlocked) - Awesome Navy
See details
 
Screen Size
6.2 inches
6.7 inches
6.2 inches
6.6 inches
Front-Facing Camera
12 megapixels
10 megapixels
12 megapixels
13 megapixels
Rear-Facing Camera
50 megapixels
50 megapixels
50 megapixels
50 megapixels
Sponsored

Reviews

Rating 4.6 out of 5 stars with 157 reviews

Rating by feature

  • Rating 4.7 out of 5 stars

  • Rating 4.6 out of 5 stars

  • Rating 4.7 out of 5 stars

92%would recommend to a friend

Customers are saying

Customers are positive about the Galaxy S24's camera, battery life, display, performance, speed, and size. They appreciate the phone's build quality, calling it "very good" and "solid." Customers also mention that the phone is a great upgrade from previous models and that they love the new amber yellow color. On the downside, there are some concerns about the phone being defective, with a few customers reporting issues with their devices.

This summary was generated by AI based on customer reviews.

Top Mentions filter

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Stellar device

    On my third week using this device, and it has been nothing short of perfect. Coming from a Pixel 7 that unfortunately had issues with the FP sensor and the display, the S24 feels like a massive upgrade. The camera has been stellar for my use (The pixel does capture better images though). The FP sensor has been excellent, and the display is definitely the best one I have used so far. No performance issues with my usage (calls, text, checking email, streaming music, and using Chrome) and the device runs cool throughout the day. I have been able to get a day's worth of battery life consistently.

    Posted by noelV

  • Rated 5 out of 5 stars

    Love it!

    So far I'm loving my new phone! I went from a s21 to this! The picture quality is spot on! It helps so much taking pictures of my cakes to post on social media! Now I can also send video messages without videos looking like crap when the other person receives it. And the battery life last way longer than my old s21!

    Posted by SandraR

  • Rated 5 out of 5 stars

    Samsung and Best Buy = Best Deal

    I have used Samsung for years Love the S24 Unlocked!. Love the Camera! I have used this Best Buy for decades they have served community during hurricanes and continue to be Professional and helpful. I have bought many items here and always my phones!!

    Posted by Maggie

Similar products from outside of Best Buy

sponsored

Deals on related items

Samsung Galaxy S Series deals
Samsung Galaxy S Series deals
Cell Phone Outlet Deals
Cell Phone Outlet Deals
Top Deals
Top Deals