BuyBackBear
Get my quote

Sell my Samsung S21 Ultra 5g

Trade-in value up to $164 (512GB · flawless · unlocked) · paid quickly · free certified data wipe

Estimated market value · we refine it daily from live competitor offers

your Samsung S21 Ultra 5g is worth real money today. Phones lose value fast once the next model lands, so selling your Samsung S21 Ultra 5g sooner puts more cash in your pocket. BuyBackBear gives you a transparent quote in seconds, pays more than carrier bill-credit deals, wipes your data to NIST 800-88 standards with a free certificate, and pays you quickly after we inspect it. Lock today's price below.

What's my Samsung S21 Ultra 5g worth? A Samsung S21 Ultra 5g in flawless, unlocked condition is worth up to $164 with BuyBackBear today. Offers range from $23 for a broken unit up to $164 flawless, and we pay cash quickly after we inspect it.

Model numbers (printed on the back): SM-G9980 (CHINA, SNAPDRAGON), SM-G998B (INTERNATIONAL, EXYNOS), SM-G998N (KOREA, EXYNOS), SM-G998U (USA, SNAPDRAGON), SM-G998U1 (USA UNLOCKED, SNAPDRAGON), SM-G998W (CANADA, SNAPDRAGON), check yours so we quote the exact variant.

Samsung S21 Ultra 5g: key trade-in facts

Top payout (flawless, unlocked)
$164
Broken / won't power on
from $23
Storage sizes priced
128GB, 256GB, 512GB
Payment
PayPal, Zelle, Venmo or check
Shipping
Free prepaid label, both ways
Quote lock
14 days
Data
NIST 800-88 certified wipe

Prices refresh daily. Machine-readable: live price JSON.

Trade-in value, last 12 monthsDown ~15%, sell before it drops more
JulSepNovJanMarMay
Jul: $165now: $140
🐻📉

Not ready to sell? Track your Samsung S21 Ultra 5g's value — free.

Phones lose value every month. We'll email you when your Samsung S21 Ultra 5g's trade-in value drops, or before a new model launch tanks the price — so you sell at the peak. No spam, unsubscribe anytime.

Email me a value update

Real cash vs a carrier trade-in

Your Samsung S21 Ultra 5g offer is paid as real cash you can spend anywhere. A carrier “trade-in” of a similar size is bill credit spread over 24 to 36 months, and only while you buy a new phone and stay on their plan.

BuyBackBear
up to $164 cash
  • Real cash by PayPal, Zelle, Venmo or check
  • Yours to spend anywhere, no strings
  • We beat any competitor’s written quote by $2
Carrier trade-in
Bill credit
  • Spread over 24 to 36 monthly bill credits
  • Only if you buy a new phone and stay on plan
  • Leave early and the remaining credit disappears
ConditionWhat it means
FlawlessLike new, no scratches, fully functional, no screen marks.
GoodLight wear, minor scratches. Screen and body intact, fully working.
FairVisible scratches or scuffs but no cracks. Fully functional.
Cracked screenCracked glass or display but the device still powers on and works.
BrokenMajor damage, cracked back, bad screen, or faults. Still powers on.
Won't power onDead or won't boot, sold for parts.

About the Samsung S21 Ultra 5g

The Samsung Galaxy S21 Ultra 5G is a premium flagship smartphone released in 2021, known for its advanced camera system, vibrant display, and S Pen support (sold separately). It features a powerful processor, large battery, and a sophisticated design.

  • ✓Quad camera system with 100x Space Zoom
  • ✓Dynamic AMOLED 2X display with 120Hz adaptive refresh rate
  • ✓S Pen support
  • ✓5G connectivity
  • ✓Premium build quality

Samsung S21 Ultra 5g specifications

Display
6.8 inches
Panel
Dynamic AMOLED 2X
Resolution
1440 x 3200 pixels
Refresh rate
120Hz adaptive
Chip
Exynos 2100 (International) / Qualcomm Snapdragon 888 (USA/China)
RAM
12GB, 16GB
OS at launch
Android 11
Main camera
108MP wide + 10MP periscope telephoto + 10MP telephoto + 12MP ultrawide
Front camera
40MP
Battery
5000
Charging
25W
Dimensions
165.1 x 75.6 x 8.9 mm
Weight
227.0
Build
Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Water resistance
IP68
Port
USB Type-C 3.2
Unlock
Under-display ultrasonic fingerprint, Face recognition
Storage
128GB, 256GB, 512GB

Common Samsung S21 Ultra 5g issues we check at inspection

  • Camera autofocus issues. Some users reported issues with the camera focusing, particularly with close-up shots.
  • Battery drain. Battery drain can be noticeable with heavy usage, especially with the 120Hz display and 5G enabled.
  • Overheating. Some users experienced the device running warm during intensive tasks or prolonged use.

How to identify your Samsung S21 Ultra 5g

Make sure you're quoting the exact model and variant, it's what locks your price.

  1. 1.Open Settings → About phone on the Samsung S21 Ultra 5g.
  2. 2."Model number" (e.g. SM-S921U) confirms the exact variant.
  3. 3.Check "Storage" for the capacity, then pick the matching size above.
  4. 4.Dial *#06# to get the IMEI.

Variants & configurations we buy

Select yours above for an exact cash offer.

Storage
128GB · 256GB · 512GB
Carriers
Unlocked, AT&T, T-Mobile, Verizon & more
Conditions
Flawless · Good · Fair · Cracked · Broken · Won't power on
Model #
SM-G9980 (CHINA, SNAPDRAGON), SM-G998B (INTERNATIONAL, EXYNOS), SM-G998N (KOREA, EXYNOS), SM-G998U (USA, SNAPDRAGON)

First, remove your Google account from your Samsung S21 Ultra 5g

Reset an Android phone before removing the account and Factory Reset Protection locks the next owner out, which drops the resale value to almost nothing. Watch the order that works before you wipe anything.

Prefer to read? Full transcript and takeaways →

How it works

Four steps, no surprises. Decline any revised offer for free, we even pay the return shipping.

  1. 1

    Get your quote

    Pick your model and condition for an instant, honest offer. Price locked 30 days.

  2. 2

    Ship it free

    We email a prepaid FedEx/UPS label and your 5 nearest drop-off spots. Pack it with our guide.

  3. 3

    We inspect & wipe

    We test, certify-erase your data (NIST 800-88), and email your Certificate of Data Erasure.

  4. 4

    Get paid fast

    Choose PayPal, debit, Venmo, or a gift-card bonus. Don't like a revised offer? Free returns.

Selling your Samsung S21 Ultra 5g: FAQs

How much is a Samsung S21 Ultra 5g worth?+

A Samsung S21 Ultra 5g in flawless, unlocked condition is worth up to $164 right now with BuyBackBear. Exact value depends on storage, carrier and condition, get your instant quote above. Your quote is locked for 14 days.

What is the Samsung S21 Ultra 5g trade-in value?+

The Samsung S21 Ultra 5g trade-in value runs up to $164 for a flawless, unlocked unit and scales down with storage, carrier lock and condition. We re-price daily against the market, so the number in your quote is current, and we'll beat any competitor's written quote by $2.

Can I sell a Samsung S21 Ultra 5g with a cracked screen?+

Yes. A Samsung S21 Ultra 5g with a cracked screen that still powers on is worth around $59. Select "Cracked screen" above for your exact offer, we buy damaged and broken devices too.

Where can I sell my Samsung S21 Ultra 5g for cash?+

Right here, get an instant quote above, ship it free with a prepaid label, and we pay cash by PayPal, Zelle, Venmo or check quickly after we inspect it. No stores, no haggling, and free return shipping if you decide not to sell.

Do I get more selling my Samsung S21 Ultra 5g here than trading it in with my carrier?+

Almost always. Carriers pay "up to" headline amounts as bill credits spread over 24 to 36 months, and only if you buy a new phone and stay on their plan. BuyBackBear pays cash after inspection, no strings.

How do I wipe my Samsung S21 Ultra 5g before selling it?+

Back up, remove your Google and manufacturer accounts (to clear the factory-reset lock), remove your SIM/SD card, then factory reset. We wipe it again to NIST 800-88 standards and email you a Certificate of Data Erasure.

What if my Samsung S21 Ultra 5g is worth less after inspection?+

If our inspection changes your quote, we send photo evidence and give you 14 days to accept or decline. Decline and we ship your Samsung S21 Ultra 5g back free, we never silently accept a lower offer for you.

How much can I sell my Samsung S21 Ultra 5g for?+

Up to $164 in cash, and even broken units fetch $19 or more. Unlike marketplaces there are no fees, so the quote is what actually lands in your account.

Where can I sell my Samsung S21 Ultra 5g near me?+

From your couch. Free prepaid shipping from all 50 states, a certified data wipe, and cash after inspection, which nearly always beats what a local kiosk or repair shop pays over the counter.

Can I sell a broken Samsung S21 Ultra 5g?+

Absolutely, we buy broken, cracked and water-damaged units. A Samsung S21 Ultra 5g that won't power on is still worth around $19, and lighter damage is worth much more. Select your condition above.

Should I sell my Samsung S21 Ultra 5g now or wait?+

Now. Used Samsung S21 Ultra 5g values only move one direction, down, and the drops cluster around new-model launches. Lock a quote today and you're protected while you decide.

Is it safe to sell my Samsung S21 Ultra 5g online?+

With BuyBackBear it is. Every Samsung S21 Ultra 5g gets a certified NIST 800-88 wipe (you get the certificate by email), any quote change comes with photos, and returns ship free if you decline.

Does storage size change what my Samsung S21 Ultra 5g is worth?+

Yes, meaningfully. We price 3 storage sizes for the Samsung S21 Ultra 5g (up to 512GB), and bigger storage always pays more. Select yours above to see the difference.

More Samsung devices we buy

Samsung Z Trifoldup to $2,050Galaxy Z Fold 7up to $1,064Samsung Z Fold 7up to $815Galaxy S26 Ultraup to $753Samsung S26 Ultra 5Gup to $735Samsung S25 Ultra 5Gup to $652Galaxy S25 Edgeup to $585Sell Samsung S24 Ultra 5Gup to $563

See all Samsung trade-in values →