Home Phones Samsung Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlo…

Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Black

Price range: $339.99
💎
Exceptional Value
Outperforms 57% of phones at a lower price than 77%.
$340 is 53% below the $730 category median.
Brand: Samsung
Category: Phone
The 2021 Samsung is a 6.8" phone powered by the Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) with 12 GB RAM and a 128 GB SSD. Its display delivers 3200 × 1440 resolution.
PQS: 84 (computed 2026-03-14 07:04:55.515246+00:00)
GTIN-14: 00647056376576
Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Black

Key specs

A human-friendly subset of specs (non-null)
Storage
128 GB
RAM
12 GB
CPU
Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680)
Display
6.8", 3200 × 1440
Resolution
3200 x 1440

How this Phone compares vs. 1045 phones

Percentile rank for each spec — higher means this product outperforms more of its peers.
RAM 12.0GB
79% Above avg
Weight 0.23kg
8% Bottom 20%
Battery 5000.0mAh
85% Above avg
Screen Size 6.8"
83% Above avg
Storage 128.0GB
30% Below avg

Spec Profile Radar

Visual snapshot — outer edge = 100th percentile (best in class)

Use-Case Fitness Deterministic

Weighted scoring based on specs that matter most for each workflow
Photography
70
Fair
Why this score?
🟢 +21.3 pts /25.05000.0mAh Battery is in the Top 15% of all phones (25% weight) biggest contributor
🟢 +20.9 pts /25.06.8" Screen Size is in the Top 17% of all phones (25% weight)
🟢 +19.8 pts /25.012.0GB RAM is in the Top 21% of all phones (25% weight)
🔴 +7.6 pts /25.0128.0GB Storage is in the Bottom 70% of all phones (25% weight)
Travel / Battery
51
Fair
Why this score?
🟢 +34.1 pts /40.05000.0mAh Battery is in the Top 15% of all phones (40% weight) biggest contributor
🟢 +8.3 pts /10.06.8" Screen Size is in the Top 17% of all phones (10% weight)
🔴 +6.1 pts /20.0128.0GB Storage is in the Bottom 70% of all phones (20% weight)
🔴 +2.4 pts /30.00.23kg Weight is in the Bottom 8% of all phones (30% weight) ⚠ drags score down

Offers

Retailer SKU Price Stock Offer Last seen
Best Buy 6533205 339.99 USD In stock View offer → 2026-03-14 02:53:44.418519+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 339.99 USD In stock 2026-03-14 02:53:44.418519+00:00
bestbuy 339.99 USD In stock 2026-03-13 03:03:31.227673+00:00
bestbuy 339.99 USD In stock 2026-03-12 02:54:18.854644+00:00
bestbuy 339.99 USD In stock 2026-03-11 02:52:39.352892+00:00
bestbuy 339.99 USD In stock 2026-03-10 03:01:50.126068+00:00
bestbuy 339.99 USD In stock 2026-03-09 03:01:29.988828+00:00
bestbuy 339.99 USD In stock 2026-03-06 06:14:34.594916+00:00
bestbuy 339.99 USD In stock 2026-03-03 02:05:09.353637+00:00
bestbuy 339.99 USD In stock 2026-03-02 08:13:14.715825+00:00

Full specs

Show full spec table
Capacity (GB)128
Screen size (in)6.8
Resolution3200 x 1440
CPUOcta-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680)
RAM (GB)12
Storage (GB)128
Reconciled at2026-03-06 10:20:22.157613+00:00
Canonical JSON (expand)
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Related products

Simple similarity over extracted specs (publish_set only)
Debug data (expand)
Raw title Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Black
Raw brandSamsung
Raw categoryBest Buy > Cell Phones > Samsung Galaxy > Samsung Galaxy S Series
Canonical highlights (non-null)
os.name Android 11
cpu.cpu_model Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680)
core.title Samsung - Pre-Owned Excellent Galaxy S21 Ultra 5G 128GB (Unlocked) - Phantom Black
core.seo_title Samsung G998U 6.8" (2021) - Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680), 12GB RAM, 128GB SSD
audio.wireless Bluetooth
brand Samsung
build.screen_glass Corning Gorilla Glass Victus
model G998U
gtin14 00647056376576
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/6533/6533205_sd.jpg
memory.ram_gb 12
battery.capacity_mah 5000.0
display.resolution 3200 x 1440
display.screen_size_in 6.8
release.year 2021
storage.storage_capacity_gb 128
category phone
physical.depth_in 0.35
physical.width_in 2.98
physical.height_in 6.5
physical.weight_kg 0.23
physical.dimensions_in 6.5 x 2.98 x 0.35 in
warranty.labor 90 Days
warranty.parts 90 Days
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
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  "longDescription": "The real metal finish on the main camera adds unity to the design and accentuates the luxury of the haze texture. It’s a bold new camera design in a category of its own. The 108MP sensor gives you the highest resolution possible on a smartphone. Featuring all new 12-bit processing that offers a wider range of colors for crystal clear shots. And with nona-binning technology, it even helps take in more light for great exposures in dark scenes. 108MP for so much detail, you can crop, crop and crop again. The New Dual Zoom lens system is faster and sharper than any zoom before, featuring a 10MP Dual telephoto lens and enhanced Super Resolution. It even has a Zoom Lock feature so you can stabilize shots while zooming. Now zoom up to 100X with clarity and precision. Shoot like a pro, with incredible details at 8K resolution and smooth action at 24 frames per second. It’s the highest resolution video available on a smartphone. Witness the fastest chip ever in a Galaxy. With a 5nm processor on board, you get seamless multitasking and a hyper-fast content streaming. The new battery in the Galaxy S21 Ultra 5G isn’t just big. It’s got the brains to match, intelligently learning your app usage to optimize power consumption. Get the power that outlasts the day even in 5G. A 120Hz refresh rate allows for the smoothest scrolling screen to keep up with all your feeds. It constantly adjusts for the best viewing experience, and even helps your battery last longer. Meet the most vivid and brightest display in a smartphone. Even the direct light of the sun can't stop your viewing pleasure. Thanks to our Eye Comfort Shield, it even intelligently adjusts blue light so your eyes won't feel so tired.",
  "shortDescription": null,
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}
Newegg raw specs
No Newegg raw specs saved for this product yet.