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Deal.ai › Samsung
Samsung
Galaxy S24 AT&T 128GB Onyx Black
Samsung

Galaxy S24 AT&T 128GB Onyx Black

Best price now

$439.83at eBayChecked 23 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Last seen at $439.83 at eBay on Nov 9.
  • Checked at 2 stores.

Our take on the Galaxy S24 AT&T 128GB Onyx Black

The Galaxy S24 is Samsung's compact flagship: a 6.2-inch Dynamic AMOLED 2X screen at 120 Hz, a Snapdragon-class octa-core chip with 8 GB RAM, and a 50 MP main camera backed by 3x telephoto and ultrawide lenses. It is one of the few small Android phones that keeps flagship cameras and a bright, fast display, which is why buyers pick it over the larger S24+ and Ultra. Owners praise the size, screen and seven years of software updates; the 4,000 mAh battery is the usual complaint, and heavy users say it needs a charge before the day ends. This AT&T-locked unit only works on AT&T, so it suits AT&T customers rather than switchers.

Best forAT&T customers who want a small flagshipOne-handed use and pocket-friendly carryPhotographers who want a 3x zoom in a compact bodyBuyers who keep phones for years and want long update support
Pros
  • Compact 167 g body with a bright 6.2-inch 120 Hz AMOLED
  • Versatile triple camera with 50 MP main and 3x optical zoom
  • Seven years of Android and security updates
  • 8 GB RAM handles multitasking and Galaxy AI features
  • IP68 water and dust resistance
Cons
  • Locked to AT&T; no other carrier SIM will activate
  • 4,000 mAh battery is small for the screen and chip
  • 128 GB storage with no microSD expansion
  • Charging is slow compared with rivals' fast-charge phones
  • Exynos version sold in some regions runs warmer than the Snapdragon model

Galaxy S24 AT&T 128GB Onyx Black prices at every store

  • eBayNew

    In stockSold by gangshengtong

    $439.83Free shippingChecked 23 h ago
    Visit eBay
  • AmazonNew

    Availability unknownMade for another market

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $599.99Free shippingChecked 8 h ago
    Visit Amazon

Also available at

  • Unclaimed BaggageCheck price at Unclaimed Baggage

Store links may earn us a commission.

Galaxy S24 AT&T 128GB Onyx Black price history

Lowest price we've seen: $439.83 on Nov 10 at eBay. Tracked across 2 stores since Nov 10.

What reviewers say

Reviewers rate the S24 as the best small Android flagship, praising its screen, cameras and update promise. The recurring criticism is battery life, which they call average at best, and slow charging.

What people mention
  • BatteryCriticisedOwners say the 4,000 mAh cell struggles to last a full heavy day.
  • SizePraisedBuyers like the light, compact body that fits one hand.
  • DisplayPraisedThe 120 Hz AMOLED is called bright and smooth.
  • CamerasPraisedThe 50 MP main and 3x zoom get consistent praise for detail and color.
  • ChargingCriticisedReviewers note charging is slower than on rival flagships.
  • SoftwarePraisedSeven years of updates and One UI are seen as a strong long-term value.

About the Galaxy S24 AT&T 128GB Onyx Black

Attention:This item can only be activated on the AT&T network.

Add on available (iPhone ONLY): Tempered Glass

Add on option: Screen Protector

Brand: Samsung

Carrier: AT&T

Condition: Good

Storage: 128GB

Color: Onyx Black

Model Name: Galaxy S24

Model Number: SM-S921U

Carrier: AT&T

Battery Health: 99%

Testing: Tested - fully functional

Specifications

Camera Resolution
50 MP
Connectivity
4G, 4G+, 5G, Bluetooth, GPS
Country Of Origin
Vietnam
EC Range
A - G
Lock Status
Factory Unlocked
Operating System
Android
Processor
Octa-core

Questions and answers

Will this phone work on carriers other than AT&T?
No. It is locked to AT&T and cannot be activated on another network unless AT&T unlocks it, which usually requires the contract or installment plan to be settled.
How does the S24 compare with the S24+ and S24 Ultra?
The S24 is the smallest and lightest, with the same chip and main camera as the S24+. The S24+ adds a larger screen and bigger battery; the Ultra adds a 200 MP camera, S Pen and titanium frame.
Is the battery good enough for a full day?
Most owners get through a moderate day, but heavy use, gaming or long camera sessions will need a top-up. It is the most common complaint about this model.
Does it support eSIM and physical SIM?
Yes. It supports eSIM and a nano-SIM tray, but there is no microSD slot, so storage is fixed at 128 GB.
What is in the box?
Samsung ships the phone with a USB-C cable and SIM tool; there is no charger or case included.
How long will it get software updates?
Samsung promises seven years of OS and security updates for the S24 series, so it will stay current well past 2030.
Where is the Galaxy S24 AT&T 128GB Onyx Black cheapest?
At eBay, for $439.83, as of our latest check.
Where can I buy the Galaxy S24 AT&T 128GB Onyx Black?
3 stores we checked sell it, including Amazon, eBay, Unclaimed Baggage.

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RAM
8 GB
Screen Size
6.2 in
SIM Card Slot
eSIM
Storage Capacity
128 GB, 256 GB
Weight
167 gSource
Display size
156.4mm (6.2")Source
Display resolution
2340 x 1080 (FHD+)Source
Display technology
Dynamic AMOLED 2XSource
Max refresh rate
120 HzSource
Rear camera
50.0 MP + 10.0 MP + 12.0 MPSource
Front camera
12.0 MPSource
Memory
8Source
Storage
128Source
Battery capacity
4000Source
Video playback time
Up to 29Source
Dimensions
147.0 x 70.6 x 7.6Source