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Deal.ai › Samsung
Samsung
Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim

Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim

Best price now

$125.00at TelefoonstarChecked 1 h ago

58% under what the other stores charge

Compared across 11 stores. Prices are checked against each store and labelled with when.

Visit Telefoonstar
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Price facts

  • Last seen at $125.00 at Telefoonstar on Nov 12.
  • Checked at 11 stores.

Our take on the Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim

The Galaxy S21 Ultra is Samsung's 2021 flagship phone, built around a 6.8-inch 120Hz AMOLED display, a 108MP main camera with two telephoto lenses, and the S Pen support Samsung added to the Ultra line. It runs on a Snapdragon 888 or Exynos 2100 depending on region, with 12GB of RAM and a 5,000mAh battery. Reviewers praised its zoom range, screen and battery life, but many found it heavy and bulky, and the curved glass and camera bump divide opinion. It still holds up as a camera-focused phone, though newer Ultras are faster and run cooler.

Best forPhotographers who want a long zoom rangeS Pen users who prefer a phone over a tabletHeavy users who want a big screen and battery
Pros
  • 108MP main camera plus 3x and 10x optical telephoto
  • 6.8-inch 120Hz AMOLED with sharp QHD+ resolution
  • 5,000mAh battery lasts a full day for most users
  • S Pen support for notes and sketching
  • IP68 water and dust resistance
  • Gorilla Glass Victus front and back
Cons
  • Heavy at 227g and tall for one-handed use
  • Curved screen edges cause accidental touches for some
  • Runs warm and throttles under sustained load
  • No charger in the box
  • Single SIM limits dual-number use

Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim prices at every store

  • WalmartNew

    In stockSold by Cellularstream

    $263.95Free shippingChecked 1 h ago
    Visit Walmart
  • Newegg.comNew

    In stockSold by Meaningful Mart Shop

    $329.00Free shippingChecked 1 h ago
    Visit Newegg.com
  • eBayPre-owned

    Availability unknownSold by wirelesssdepot

    $121.00Free shippingChecked 1 h ago
    Visit eBay
  • TelefoonstarNew

    Availability unknown

    $125.00Checked 1 h ago
    Visit Telefoonstar
  • AmazonRefurbished

    Availability unknown

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

    $249.95Free shippingChecked 1 h ago
    Visit Amazon
  • eBayNew

    Availability unknownShips from Australia · duties may apply

    $288.88Checked 1 h ago
    Visit eBay
  • Cellification.comNew

    Availability unknown

    $289.99Checked 1 h ago
    Visit Cellification.com
  • Cell2GetNew

    Availability unknown

    $299.95Checked 1 h ago
    Visit Cell2Get
  • ElectronicsForce.comNew

    Availability unknown

    $299.99Checked 1 h ago
    Visit ElectronicsForce.com
  • TECHDaddy AccsNew

    Availability unknown

    $499.00Checked 1 h ago
    Visit TECHDaddy Accs
  • fusion electronicsNew

    Availability unknown

    $1,149.99Checked 1 h ago
    Visit fusion electronics
  • AmazonNew

    Availability unknown

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

    $1,171.37Free shippingChecked 1 h ago
    Visit Amazon

Store links may earn us a commission.

Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim price history

Lowest price we've seen: $125.00 on Nov 13 at Telefoonstar. Tracked across 10 stores since Nov 13.

What reviewers say

Owners and reviewers rate the S21 Ultra highly for its camera versatility, screen and battery life. Common complaints are the size and weight, heat under heavy gaming, and the curved display.

What people mention
  • Camera zoomPraisedReviewers say the 3x and 10x telephoto lenses keep detail that rivals lose.
  • Size and weightCriticisedOwners call it heavy and tall, hard to use one-handed.
  • DisplayPraisedThe 120Hz QHD+ AMOLED is called bright and smooth.
  • HeatCriticisedSustained gaming makes it warm and causes throttling.
  • BatteryPraisedMost users get through a full day on the 5,000mAh cell.
  • Curved screenMixedSome like the look but report accidental edge touches.

About the Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim

The Samsung Galaxy S21 Ultra is a single-SIM 5G smartphone with a 6.8-inch Dynamic AMOLED 2X display. The display has a 120Hz refresh rate, HDR10+ and 1500 nits peak brightness. It has an always-on display mode and supports a stylus.

The front and back are Corning Gorilla Glass Victus, joined by an aluminum frame. The phone is IP68 dust and water resistant, up to 1.5 m for 30 minutes. It has 128GB of UFS 3.1 storage and 12GB of RAM, with no card slot.

The rear camera has four lenses: 108 MP wide, 10 MP periscope telephoto with 10x optical zoom, 10 MP telephoto with 3x optical zoom, and 12 MP ultrawide. It records video up to 8K at 24fps. The 40 MP front camera supports dual video call and auto-HDR.

Color
Phantom Black
SIM
Single SIM
Network
GSM / CDMA / HSPA / EVDO / LTE / 5G
Dimensions
165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight
227 g (Sub6), 229 g (mmWave) (8.01 oz)
Build
Gorilla Glass Victus front and back, aluminum frame
Resistance
IP68 dust/water resistant, up to 1.5 m for 30 min
Stylus
Stylus support
Display type
Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Display size
6.8 inches, 112.1 cm² (~89.8% screen-to-body ratio)
Resolution
1440 x 3200 pixels, 20:9 ratio (~515 ppi)
Screen protection
Corning Gorilla Glass Victus

Questions and answers

Is the S21 Ultra still worth buying?
If you want a long zoom range and a big screen, it remains capable. Newer Ultras are faster and run cooler, so compare before deciding.
Does it support the S Pen?
Yes, the S21 Ultra works with S Pen, but the pen is sold separately and there is no silo to store it.
How is the battery life?
The 5,000mAh battery typically lasts a full day of mixed use. Heavy gaming drains it faster and warms the phone.
Does it have a headphone jack or microSD slot?
No. There is no headphone jack and no microSD slot, so storage is fixed at 128GB.
Is it dual SIM?
This version is single SIM only. Check the model if you need two lines.
What is in the box?
The phone only. Samsung does not include a charger or earphones.
Where is the Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim cheapest?
At Telefoonstar, for $125.00, 58% under what the other stores charge, as of our latest check.
Where can I buy the Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim?
10 stores we checked sell it, including Telefoonstar, Amazon, eBay, Walmart, Cellification.com.

Stores we've priced the Samsung Galaxy S21 Ultra 128GB 12GB RAM Single Sim at

  • Cell2Get deals and prices
  • ElectronicsForce.com deals and prices
  • Fusion Electronics deals and prices
  • Newegg deals and prices
  • TECHDaddy Accs deals and prices
Always-on display
Yes
OS
Android 11, upgradable to Android 14, One UI 6
Chipset
Exynos 2100 (5 nm) International; Qualcomm SM8350 Snapdragon 888 5G (5 nm) USA/China
Storage
128GB, UFS 3.1
RAM
12GB
Card slot
No
Main camera
108 MP f/1.8 wide, 24mm, OIS; 10 MP f/4.9 periscope telephoto, 240mm, 10x optical zoom, OIS; 10 MP f/2.4 telephoto, 72mm, 3x optical zoom, OIS; 12 MP f/2.2 ultrawide, 13mm
Main camera features
LED flash, auto-HDR, panorama, PDAF, Laser AF, Super Steady video
Main video
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Selfie features
Dual video call, auto-HDR
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