S21 Ultra Unlocked Smartphone

Compare Products

Choose upto 5 items for side by side feature comparison

Wishlist

Go to collections

Show filters

Shop S21 Ultra Unlocked Smartphone

Sponsored

5G · Feature-Rich · Samsung · Superior Build Quality · Superior Camera Quality

Galaxy S21 Ultra 5G 128GB - Silver - Unl…

$234.00

$1,199.99

BackMarket US

5G · Affordable · Comfortable Grip · Feature-Rich · Samsung

Galaxy S21 Ultra 5G 128GB - Black - Unl…

Galaxy S21 Ultra 5G 512GB - Black - Unl…

Galaxy S21 Ultra 5G 512GB - Dark Blue …

Comfortable Grip · Compact · Effortless Setup · Feature-Rich · Precision S Pen

Galaxy S22 Ultra 5G 512GB - Black - Unl…

Samsung Galaxy S25 Ultra - Titaniu…

5G · 6.7" · Comfortable Grip · Compact · Feature-Rich

Galaxy S21+ 5G 128GB - Black - Unl…

Galaxy S21 Ultra 5G 512GB - Dark Gray …

Galaxy S21 5G 256GB - Gray - Unl…

$171.00

$850.00

BackMarket US

Samsung Galaxy S25 - Navy - 128G…

Galaxy S22 Ultra 5G 256GB - Black - Unl…

5G · Affordable · Comfortable Grip · Feature-Rich · Long-lasting Battery

Galaxy S23 Ultra 256GB - Black - Unl…

Apple iPhone 16 Pro Max - Desert Titani…

Comfortable Grip · Compact · Effortless Setup · Feature-Rich · Precision S Pen

Galaxy S22 Ultra 5G 128GB - Black - Unl…

Galaxy S21 5G 128GB - Black - Unl…

$159.00

$459.00

BackMarket US

Samsung Galaxy S25 Ultra - Titaniu…

Galaxy S21 Ultra (5G) - 128GB - Pha…

Galaxy S25 Ultra 256GB - Black - Unl…

Motorola Razr+ 2025 - Hot Pink (W…

Galaxy S23 Ultra 256GB - Purple - U…

Galaxy S25 Ultra 256GB - Black - Unl…

Galaxy S23 Ultra 256GB - Purple - U…

Galaxy S23 Ultra 512GB - Black - Unl…

Galaxy S21 FE 5G 128GB - Gray - Unl…

Galaxy S21 FE 5G 128GB - Dark Blue …

Galaxy S21 FE 5G 256GB - Purple - U…

$209.99

$849.00

BackMarket US

Samsung Galaxy S25 Ultra - Titaniu…

5G · Compact · Feature-Rich · Precision S Pen · Samsung

Galaxy Note20 Ultra 5G 128GB - Bronz…

Galaxy S21 Ultra (5G) - 128GB - Pha…

$220.96

Reebelo USA

Free shipping

Comfortable Grip · Compact · Feature-Rich · Samsung · Stylish

Galaxy S21 5G 128GB - White - Un…

Galaxy S25 Ultra 256GB - Blue - Unl…

Galaxy S21 5G 128GB - Gray - Unl…

$249.00

BackMarket US

Refurbished

Galaxy S23 Ultra 256GB - Beige - Unl…

Motorola Razr+ 2025 - Hot Pink (W…

Comfortable Grip · Compact · Feature-Rich · Samsung · Stylish

Galaxy S21 5G 128GB - Purple - U…

Showing 1 - 36 out of 174 results for "s21 ultra unlocked smartphone"
Sort by:
Featured
Featured
Price - High To Low
Price - Low To High
1. Saved
  Save to wishlist
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  SAMSUNG Electronics Galaxy S21 Ul…
  $479.88
  A
  Amazon.com
  Free shipping
2. Saved
  Save to wishlist
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G G998…
  $392.99
  W
  Walmart
3. Saved
  Save to wishlist
  SALE
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G 128G…
  $349.99
  $379.99
  W
  Walmart
4. Saved
  Save to wishlist
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G 128G…
  $379.99
  Walmart
5. Saved
  Save to wishlist
  New Sealed Samsung Galaxy S21 Ult…
  $261.25
  E
  eBay
  Free shipping
6. Saved
  Save to wishlist
  Special Offer
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G G998…
  $335.00
  Newegg.com
  Free shipping
7. Saved
  Save to wishlist
  Samsung Galaxy S21 Ultra 5G Sm-G9…
  $319.99
  E
  eBay
  Free shipping
8. Saved
  Save to wishlist
  NEW Samsung Galaxy S21 Ultra 5G …
  $258.66
  E
  eBay
  Free shipping
9. Saved
  Save to wishlist
  NEW SEALED Samsung Galaxy S21 …
  $259.58
  E
  eBay
  Free shipping
10. Saved
  Save to wishlist
  4.3
  ·
  1K+
  4.3
  1K+ ratings
  NEW SEALED Samsung Galaxy S21 …
  $266.92
  E
  eBay.com
  Free shipping
11. Saved
  Save to wishlist
  New Samsung Galaxy S21 Ultra 128…
  $312.50
  E
  eBay.com
  Free shipping
12. Saved
  Save to wishlist
  BRAND NEW Samsung Galaxy S21 Ul…
  $257.66
  E
  eBay
  Free shipping
13. Saved
  Save to wishlist
  New Samsung Galaxy S21 Ultra 5G S…
  $259.99
  E
  eBay
  Free shipping
14. Saved
  Save to wishlist
  NEW Samsung Galaxy S21 Ultra (5G…
  $342.29
  E
  eBay
  Free shipping
15. Saved
  Save to wishlist
  NEW In Sealed Samsung Galaxy S21 …
  $258.89
  E
  eBay.com
  Free shipping
16. Saved
  Save to wishlist
  New Unlocked Samsung S21 Ultra 5…
  $261.48
  E
  eBay.com
  Free shipping
17. Saved
  Save to wishlist
  Brand NEW Samsung Galaxy S21 Ultr…
  $257.99
  E
  eBay.com
  Free shipping
18. Saved
  Save to wishlist
  NEW Sealed Samsung Galaxy S21 Ul…
  $338.49
  E
  eBay
  Free shipping
19. Saved
  Save to wishlist
  Special Offer
  3.5
  ·
  2
  3.5
  2 ratings
  Samsung Galaxy S21 Ultra 5G Factor…
  $436.99
  Newegg.com
  Free shipping
20. Saved
  Save to wishlist
  Special Offer
  Samsung Galaxy S21 Ultra 5G 128G…
  $379.99
  Newegg.com
  Free shipping
21. Saved
  Save to wishlist
  Used
  SALE
  4.6
  ·
  1K+
  4.6
  1K+ ratings
  Samsung Galaxy S21 Ultra Unlocked
  $279.99
  $319.91
  W
  Wamatek
22. Saved
  Save to wishlist
  New Samsung S21 Ultra 128GB+12G…
  $263.57
  E
  eBay
  Free shipping
23. Saved
  Save to wishlist
  Unlocked Samsung Galaxy S21 Ultra …
  $148.89
  MyBestShoe
  Free shipping
24. Saved
  Save to wishlist
  SALE
  Unlocked Cell Phones S21 Ultra Pho…
  $337.39
  $812.34
  T
  Temu US
  Free shipping
25. Saved
  Save to wishlist
  S21 Ultra 6.26 Inch Smartphone Fac…
  $126.36
  W
  Walmart
26. Saved
  Save to wishlist
  Samsung Galaxy S21 Ultra S21U 5G …
  $397.60
  U
  USA_AliEx
27. Saved
  Save to wishlist
  4.4
  ·
  1K+
  4.4
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G, 128G…
  $59.99
  Qietaw
28. Saved
  Save to wishlist
  SALE
  Phone S21 Ultra Phone Phone Unloc…
  $324.50
  $999.00
  T
  Temu US
  Free shipping
29. Saved
  Save to wishlist
  SALE
  4.6
  ·
  1K+
  4.6
  1K+ ratings
  Samsung Galaxy S21 Ultra 5G 128G…
  $1,293.59
  $1,319.99
  C
  cartnear
  Free shipping
30. Saved
  Save to wishlist
  Samsung Galaxy S21 Ultra 5G, 128G…
  $59.99
  mariopari
31. Saved
  Save to wishlist
  C Samsung Galaxy S21 Ultra S21U 5…
  $351.78
  U
  USA_AliEx
32. Saved
  Save to wishlist
  Samsung Galaxy S21 Ultra 5G, 128G…
  $59.99
  H
  huanker
33. Saved
  Save to wishlist
  Samsung Galaxy S21 Ultra S22 Ultra …
  $290.98
  E
  eBay
  Free shipping
34. Saved
  Save to wishlist
  Global Version S21 Ultra 5 Inch Unlo…
  $35.91
  A
  Alibaba B2B
35. Saved
  Save to wishlist
  Refurbished
  Samsung Silver Galaxy S21 Ultra 5G …
  $348.00
  B
  Back Market (US)
  Free shipping
36. Saved
  Save to wishlist
  S21 S25 Ultra Smartphone 16G 512G…
  $38.00
  A
  Alibaba B2B
Oops! We are sorry, something went wrong.
Continue your shopping by clicking on another product
Product added to your wishlist! View wishlist
Sign in to see your saved products on any device
Product removed from your wishlist! View wishlist
Sign in to see your saved products on any device
Something went wrong. Please try again later.
Product is added to compare already. Please refresh the page.
Product is not found in compare. Please refresh the page.
5 Products already added. Please delete existing selection to add this.
Sponsored
✕
Learn how your ads are chosen
backmarket.com
Why you're seeing this ad?
Your current search
Advertiser Details
Name: Back Market Inc
Location: United States
Verified by Microsoft Advertising. See more ads from this advertiser on Bing. Learn more about the Microsoft Advertiser Identity Verification Program.
t-mobile.com
Why you're seeing this ad?
Your current search
Advertiser Details
Name: T-Mobile
Location: United States
Verified by Microsoft Advertising. See more ads from this advertiser on Bing. Learn more about the Microsoft Advertiser Identity Verification Program.
ebay.com
Why you're seeing this ad?
Your current search
Advertiser Details
Name: eBay
Location: United States
Verified by Microsoft Advertising. See more ads from this advertiser on Bing. Learn more about the Microsoft Advertiser Identity Verification Program.
amazon.com
Why you're seeing this ad?
Your current search
Advertiser Details
Name: Amazon.com Services, Inc
Location: United States
Verified by Microsoft Advertising. See more ads from this advertiser on Bing. Learn more about the Microsoft Advertiser Identity Verification Program.
www.ebay.com
Why you're seeing this ad?
Your current search
Advertiser Details
Name: WEREPO GmbH
Location: Germany
Verified by Microsoft Advertising. See more ads from this advertiser on Bing. Learn more about the Microsoft Advertiser Identity Verification Program.
Ad settings
Comfortable Grip · Compact · Feature-Rich · Generous Storage Capacity · Samsung
Galaxy S20 Ultra 5G 128GB - Black - Unl…
$375.00

$1,399.00
BackMarket US
4.0
·
1K+
Refurbished
Galaxy S21 FE 5G 128GB - Green - Un…
$154.00

$699.99
BackMarket US
Refurbished
Galaxy S21 FE 5G 256GB - Gray - Unl…
$182.00

$699.99
BackMarket US
Apple iPhone 16 Plus - Pink - 128G…
$0.00
now
$34.58/mo
x 24
T-Mobile
Refurbished
Galaxy S22 Ultra 5G 256GB - Red - Unlo…
$335.99

$800.00
BackMarket US
4.0
·
93
Samsung Galaxy S25 - Icy Blue - 128…
$0.00
now
$33.33/mo
x 24
T-Mobile
Refurbished
Galaxy S21 5G 128GB - Gray - Unl…
$142.00
BackMarket US
Used
Samsung Galaxy S21 Ultra 5G G998…
$239.95
eBay
Free shipping
Used
Samsung Galaxy S21 Ultra 5G Sm-G…
$264.95
eBay
Free shipping
Refurbished
Samsung Galaxy S21 Ultra 5G Fully …
$468.99
eBay
Free shipping
5G · Affordable · Comfortable Grip · Feature-Rich · Samsung
SAMSUNG Galaxy S21 Ultra 5G, US V…
$256.44
Amazon.com
4.0
·
1K+
Refurbished
Galaxy S24 Ultra 1000GB - Black - U…
$849.00

$1,659.00
BackMarket US
5.0
·
10K+
5G · Comfortable Grip · Compact · Feature-Rich · Samsung
Galaxy S21 5G 128GB - Pink - Unl…
$142.00

$799.00
BackMarket US
4.5
·
1K+
Samsung Galaxy S25+ - Mint - 256G…
$0.00
now
$41.67/mo
x 24
T-Mobile
Refurbished
Galaxy S21+ 5G 128GB - Silver - Unl…
$146.99

$999.99
BackMarket US
4.0
·
1K+
Refurbished
Samsung Galaxy S21 Ultra 5G 256G…
$299.99
eBay
Free shipping
5G · Comfortable Grip · Compact · Fast processing speed · Feature-Rich
Galaxy S21+ 5G 128GB - Purple - U…
$169.95

$772.51
BackMarket US
4.5
·
814
Refurbished
Galaxy S24 Ultra 512GB - Black - Unl…
$676.00

$1,399.00
BackMarket US
3.5
·
3
Samsung Galaxy S21 Ultra 5G 12G…
$264.88
eBay
Free shipping
NEW-Sealed Samsung Galaxy S…
$270.96
eBay.com
Free shipping
- Unlocked Galaxy S21 Ultra | Galaxy S21 Ultra (Unlocked)
  https://www.backmarket.com › unlocked › s21-ultra
  SponsoredUnlocked Galaxy S21 Ultra guaranteed to work like new, at a far better price. Find a refurbished Galaxy S21 Ultra that's better for your wallet and the planet.
  Sustainable Shopping · No hidden fees · 1-Year Warranty · Professionally cleaned
  Service catalog: Free Shipping, Free 1-Year Warranty, Certified Merchants
  4.5/5 (14K reviews)
- 1
- 2
- 3
- 4
- 5

Show Only

Brand

Price

Seller

Shop S21 Ultra Unlocked Smartphone

Unlocked Galaxy S21 Ultra | Galaxy S21 Ultra (Unlocked)