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Deal.ai › Samsung

Samsung

Samsung Galaxy S21 5G - 128GB - Gray

Samsung Galaxy S21 5G - 128GB - Gray

Best price now

$125.00at TelefoonstarChecked 43 min ago

46% under what the other stores charge

Compared across 15 stores. Prices are checked against each store and labelled with when.

Visit Telefoonstar

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Price facts

Lowest price today: $125.00 at Telefoonstar (checked Nov 13, 2026).
Checked at 15 stores.

Our take on the Samsung Galaxy S21 5G - 128GB - Gray

The Galaxy S21 5G is Samsung's 2021 flagship phone with a 6.2-inch 120Hz AMOLED screen, Snapdragon 888 (US) or Exynos 2100 (elsewhere) chip, triple rear camera with 3x telephoto, and 128GB of storage with no microSD slot. It stands out for its compact size, smooth display and versatile cameras at a lower launch price than the S20 it replaced. Reviewers liked the performance and camera consistency but flagged the plastic back, the 1080p screen resolution drop from the S20, and average battery life. It suits buyers who want a small, fast Android phone with a strong camera and long software support rather than the latest model.

Best forBuyers who want a compact flagship Android phonePhotographers who value a 3x optical zoom in a small bodyUsers upgrading from an older Galaxy S or A series

Pros

6.2-inch 120Hz AMOLED display feels smooth and bright
Snapdragon 888/Exynos 2100 delivers fast everyday performance
Triple camera with 3x optical telephoto is versatile
Compact and light compared with most flagships
Carrier unlocked, so it works on major US networks
Samsung's long software update policy covers several Android versions

Cons

Plastic back feels less premium than glass rivals
1080p screen resolution is a step down from the S20
Battery life is only average for a flagship
No microSD expansion and no charger in the box
Used units may show scratches and unknown battery health

Samsung Galaxy S21 5G - 128GB - Gray prices at every store

WalmartNew
In stockSold by Reebelo
$164.00Free shippingChecked 43 min ago
Visit Walmart
retail.eraPre-owned
In stockShips from Canada · duties may applyReturn policy
$215.00Checked 43 min ago
Visit retail.era
Cell2GetNew
In stock
$229.95Free shippingChecked 43 min ago
Visit Cell2Get
eBayNew
In stockSold by amcelltech
$249.88Free shippingChecked 43 min ago
Visit eBay
TelefoonstarNew
Availability unknown
$125.00Checked 43 min ago
Visit Telefoonstar
Simple Cell ShopNew
Availability unknown
$159.99Checked 43 min ago
Visit Simple Cell Shop
AmazonRefurbished
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$179.00Free shippingChecked 43 min ago
Visit Amazon
Reebelo USANew
Availability unknown
$186.08Checked 43 min ago
Visit Reebelo USA
Cellification.comNew
Availability unknown
$189.99Checked 43 min ago
Visit Cellification.com
ElectronicsForce.comNew
Availability unknown
$228.99Checked 43 min ago
Visit ElectronicsForce.com
KenDoTronicsNew
Availability unknown
$319.00Checked 43 min ago
Visit KenDoTronics
Reliant CellularNew
Availability unknown
$379.97Checked 43 min ago
Visit Reliant Cellular
koshercell.orgOpen box
Availability unknown
$394.99Checked 43 min ago
Visit koshercell.org
PoshmarkNew
Availability unknown
$550.00Checked 43 min ago
Visit Poshmark
Overseas ElectronicsNew
Availability unknown
$624.99Checked 43 min ago
Visit Overseas Electronics

Store links may earn us a commission.

Samsung Galaxy S21 5G - 128GB - Gray price history

Lowest price we've seen: $125.00 on Nov 13 at Telefoonstar. Tracked across 12 stores since Nov 13.

What reviewers say

Reviewers and owners generally rate the S21 5G as a fast, well-rounded compact flagship with a great screen and reliable cameras. Common complaints center on the plastic back, the drop to a 1080p display, and battery life that is merely adequate.

What people mention

DisplayPraisedOwners like the 120Hz AMOLED panel for its smoothness and brightness.
BuildCriticisedReviewers say the plastic back feels less premium than glass-bodied rivals.
BatteryMixedBattery life is described as adequate but not impressive, especially with heavy use.
PerformancePraisedThe chip is called fast and responsive for games and everyday apps.
CamerasPraisedThe triple camera and 3x telephoto are praised for consistent, sharp photos.
ChargerCriticisedBuyers note the phone ships without a power adapter.

About the Samsung Galaxy S21 5G - 128GB - Gray

This is a used Samsung Galaxy S21 5G in gray with 128GB of storage. It is carrier unlocked and is not activation locked.

The screen has light scratches. The battery holds a charge, but its health is unknown. The front camera, back camera, Wi-Fi and speakers all work.

Brand: Samsung
Model: Galaxy S21 5G
Storage: 128GB
Color: Gray
Condition: Used
Carrier: Unlocked
Activation lock: No
Screen: Light scratches
Battery: Holds a charge, health unknown
Working features: Front camera, back camera, Wi-Fi, speakers
Not included: Power adapter

Questions and answers

Is the Galaxy S21 5G still worth buying?: Yes, if you want a compact, fast Android phone with a good camera and long software support. Newer models add better battery and build, but the S21 remains capable for everyday use.
How does it compare with the Galaxy S20?: The S21 has a faster chip and a smoother 120Hz display at 1080p, while the S20 offered a sharper 1440p panel and a glass back. The S21 trades some premium materials for performance.
Does it have a microSD card slot?: No. The S21 5G has no microSD expansion, so the 128GB of built-in storage is all you get.
Will it work with my carrier?: This unit is carrier unlocked, so it works with major US networks. Check that your carrier supports the phone's bands before buying.
What is in the box?: The phone only. No power adapter is included, so you will need your own USB-C charger.
How is the battery on a used unit?: Battery health on used units is unknown and varies. Expect the battery to hold a charge but possibly deliver less runtime than when new.
Where is the Samsung Galaxy S21 5G - 128GB - Gray cheapest?: At Telefoonstar, for $125.00, 46% under what the other stores charge, as of our latest check.
Where can I buy the Samsung Galaxy S21 5G - 128GB - Gray?: 15 stores we checked sell it, including retail.era, Telefoonstar, Amazon, Simple Cell Shop, Walmart.

Stores we've priced the Samsung Galaxy S21 5G - 128GB - Gray at

Cell2Get deals and prices
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Reebelo USA deals and prices
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