Samsung Galaxy S21 Ultra Unlocked
7 listings · Asking prices from $249
Shipping can vary by seller and listing, and most listings ship free when the items in your order total $20 or more before tax.Delivery times
Orders ship the same or next business day, then usually take 2-4 business days in transit. Local-pickup-only listings are not shipped.
How much is a used Samsung Galaxy S21 Ultra?
A used Samsung Galaxy S21 Ultra costs $249 to $299 on FlexEmarket today (3 used listings). Open-box from $285 (1 listing), plus 3 in other conditions.
Lowest price by storage, any condition
- 128GB from $249
- Storage not stated from $279
7 in stock · 1 unlocked · Prices checked Nov 11, 2026
Samsung Galaxy S21 Ultra listings
- Used · Good (seller's grade)Samsung Galaxy S21 Ultra: Samsung Galaxy S21 Ultra · Unlocked · Used, Good · 128GB$249
- UsedSamsung Galaxy S21 Ultra · 128GB: Samsung Galaxy S21 Ultra 5G, 128GB, Phantom Black - UnlockedPhantom Black
- Unlocked
$265 - Samsung Galaxy S21 Ultra: Samsung S21 Ultra to S22 Ultra Reburfished ( Starting from $279 )
- Lock status not stated
$279 - Open Box · Excellent (seller's grade)Samsung Galaxy S21 Ultra: Samsung Galaxy S21 Ultra · Unlocked · Open Box, Excellent · 128GB$285
- Samsung Galaxy S21 Ultra: Samsung S21 Ultra to S25 Ultra Open box Original ( Starting from $349 )
- Lock status not stated
$299
unlocked from $265 · 7 listings · open-box from $285 · used from $249 · updated Nov 2026
3 Used · 1 Open-Box · 1 Renewed
By lock status: Unlocked from $265 (1) · Lock not stated from $249 (6)
Samsung Galaxy S21 Ultra prices, November 2026
| Condition | Listings | Lowest | Typical | Highest |
|---|---|---|---|---|
| Used | 3 | $249 | $265 | $299 |
| Open-Box | 1 | $285 | Not shown for fewer than 3 listings | $285 |
| Renewed | 1 | $269 | Not shown for fewer than 3 listings | $269 |
Asking prices from 5 of 7 live listings, updated Nov 2, 2026. The 2 listings with no New, Open-Box, Used or Renewed condition are not in the table. Sellers set these prices. Typical is the middle asking price, shown only for 3 or more listings; with an even count it is the lower of the two middle prices.
Price guide: Used phone prices
Samsung Galaxy S21 Ultra asking prices by storage and condition
| Storage | Used | Open-Box | Renewed |
|---|---|---|---|
| 128GB | $2492 listings | $2851 listing | $2691 listing |
Each cell is the lowest asking price sellers set for that storage size and condition, then how many listings it covers; a dash means no listing. Storage is read from listing titles: 4 of 7 live listings are in the grid; the others name no single storage size, or have no New, Open-Box, Used or Renewed condition or no valid price.
Samsung Galaxy S21 Ultra vs Samsung Galaxy S20 Ultra and Samsung Galaxy S22 Ultra
| Samsung Galaxy S20 Ultra | Samsung Galaxy S21 Ultra | Samsung Galaxy S22 Ultra | |
|---|---|---|---|
| Lowest asking price | $139.99 | $249 | $276 |
| Live listings | 3 | 7 | 8 |
Prices are the lowest asking price of live FlexEmarket listings and change as listings do.
What to check before buying a used Samsung Galaxy S21 Ultra
- Battery health: ask the seller for the current battery health reading.
- Activation Lock: ask the seller to confirm Find My iPhone (iCloud) or the Google account lock (FRP) is turned off.
- IMEI: ask for the IMEI and check that it is not reported lost, stolen or blacklisted.
- Carrier: confirm the phone is unlocked or works with your carrier.
Storage sizes named in listing titles
- 128GB: 4 listings, $249–$285
3 listings name several sizes or none.
Colors named in listing titles
- Black: 1 listing
Questions about the Samsung Galaxy S21 Ultra
How much is a used Samsung Galaxy S21 Ultra?
Sellers on FlexEmarket are asking $249 to $299 for a used Samsung Galaxy S21 Ultra (3 used listings, typical $265, updated Nov 2, 2026). Other conditions: Open-Box from $285, Renewed from $269.
Are the Samsung Galaxy S21 Ultra listings on FlexEmarket unlocked?
4 of 7 live listings say unlocked in the title. A listing that names a carrier, such as AT&T or Verizon, may be locked to it; check the title and ask the seller before you buy. Will this phone work for me?
What do New, Open-Box, Used and Renewed mean on FlexEmarket?
They are the condition each seller sets on a listing. A listing marked New whose title says otherwise is counted under the condition the title names. Grade words in a title are the seller's own description, so read the listing and ask the seller if anything is unclear. Open Box condition guide
Can I return a Samsung Galaxy S21 Ultra bought on FlexEmarket?
Returns can be requested within 30 days of the purchase date with a valid receipt or proof of purchase. Items are returned by mail, the buyer pays the return shipping, and there is no restocking fee. The request goes to the seller of the item, and some items may not be eligible. Returns policy