Highest Payout
More than AT&T, Verizon, and T-Mobile
Fast Payments via Zelle, Venmo, Apple Pay & PayPal
30-Day Price Lock Double the Avg Buyback
SellmyCellphone clearly laid out the process on their website, and that's exactly how it happened. Free shipping fast checking, and quick payment. Everything was explained in simple terms, which made the experience smooth and stress free..
Excellent spot to sell bulk phones! They offer customized trade-in options and provide personalized signatures for added assurance and insurance..
I needed a phone for my son iPhone 15 pro max white titanium, 256 GB cause he broke his again ,nothing new and rite before new years but thanks to my guys @ Sellmycellphone...
These guys gave me way more than the other places I tried. Once I said yes it was almost instantly that I had my cash and was off to do some holiday shopping...
I got extra shopping money for this Christmas and it was easy and fast. They paid way more than the kiosk by far. Go see them first. Awesome!!
The value of your Samsung Galaxy S21+ depends on several factors, including storage capacity, carrier, unlocked status, physical condition, and whether all functions work properly.
Whether you have the 128GB or 256GB model, SellMyCellPhone makes it easy to check your device's current value and get an offer online.
Select your device details above to get an instant offer. It's fast, free, and there's no obligation to sell.
Quick Take
Your Galaxy S21+ can still be worth real cash, even several generations removed from the newest Galaxy S releases. Storage capacity, carrier status, condition, and market demand all affect the final offer. The fastest way to find your exact value is to select your device details and request a quote.
The 128GB and 256GB versions can have different values. More storage can increase resale value.
Unlocked devices can be attractive to more buyers because they are not tied to a particular carrier.
A flawless phone generally receives more than one with scratches, dents, cracked glass, or functional problems.
A phone doesn't need to be current to be worth buying used. The S21+ carved out its niche by offering a bigger screen and battery without Ultra pricing, and that same logic still appeals to budget-conscious buyers today, just at a lower price point than when it launched. Refurbishers and secondhand buyers looking for dependable mid-tier hardware keep it moving in the resale market.
A solid fit for everyday users with lighter storage needs.
More space for photos, videos, games, and apps.
Yes. Select your carrier, storage, and condition to get a quote in seconds. Ship it using the free prepaid label we send you, and once it arrives and passes inspection, payment typically goes out the same day. If you're searching for a way to sell your S21+ for cash today and mean today, this beats waiting on a marketplace buyer or trying to track down a private sale.
Carrier Trade-In
Bill credits or device credit. Convenient when upgrading, but the value is often lower and tied to your carrier.
Samsung Trade-In
Credit toward a Samsung purchase. Easy during a new purchase, but you receive credit rather than cash.
Sell for Cash (Us)
Cash via your selected payment method, with more flexibility and no new purchase required.
Private Sale
Potentially higher private-sale price, but it takes more time and involves buyer risk.
Be honest about your device condition to receive the most accurate offer.
Like new with no scratches or visible signs of use.
Minimal signs of use with no deep scratches.
Light scratches or minor signs of normal use.
Visible scratches, dents, or noticeable wear.
Major damage or functional problems.
Yes. We buy Galaxy S21+ phones even if they have damage or functional issues, including:
As long as it powers on, we'll make an offer. The one thing we can't work with is water damage or a device that won't turn on at all.
We can only accept devices that are fully paid off and not reported lost, stolen, or blocked.
We do NOT accept:
Select your carrier, storage capacity, and condition to receive your offer.
Review your offer and accept it online if you're happy with the value.
Use the prepaid shipping label, package your phone, and ship it to us for free.
Once we receive and inspect your device, we'll process your payment.
Average payout compared with major buyback platforms.
Average payout compared with ecoATM specifically.
We don't just say we pay more, we've shown it. In a side-by-side comparison against major buyback platforms, SellMyCellPhone paid an average of 30% more overall, and about 128% more than ecoATM specifically. Older, mid-tier devices like the S21+ are exactly where some platforms price the most conservatively, betting sellers won't bother comparing an aging phone across multiple sites. Before you accept the first quote you see, it's worth checking what SellMyCellPhone will offer.
Get competitive value for your device.
Ship your device without paying shipping fees.
Get paid after your device is received and inspected.
Your quote is locked according to the applicable quote terms.
A simple online process for selling your device.
For many owners, selling the Galaxy S21+ for cash is a straightforward way to turn a phone that's aged out of daily use into money, rather than letting it sit as an unused backup. Instead of being limited to carrier credits or a new-device purchase, selling for cash gives you flexibility over how you use it. The amount you receive ultimately depends on your phone's storage, carrier status, condition, and current market demand. Check your device details above to find your current offer.
Yes. Even though the S21+ is several generations old, it still has resale value. If you're no longer using it, selling now can be a better option than keeping it while the phone continues to depreciate.
Not always. A repair can improve the phone's condition, but the repair cost may be greater than the additional value it adds to the device. Compare the cost of fixing your S21+ with its current offer before paying for a repair.
Yes. A battery that no longer holds a charge as well as it once did doesn't automatically prevent you from selling your S21+. Battery problems can place the phone in a lower condition category and reduce its value, but faulty devices that power on still qualify.
Yes. You don't need the original box, charger, cable, or other accessories to request a quote. The phone's model, storage capacity, carrier status, and condition are the important details used to determine its value.
The resale value of a Galaxy S21+ has changed since its launch as newer Samsung phones have entered the market. Your specific phone can still have meaningful value depending on its storage, carrier, and condition. Get an instant quote to find out what your S21+ is worth today.
Yes. You can still sell carrier-locked Galaxy S21+ phones from AT&T, Verizon, and T-Mobile to SellMyCellPhone. Your carrier status is one of the details used when determining your offer, so select the correct carrier when getting your quote.
Back up your photos and other important data, sign out of your Google and Samsung accounts, remove your SIM card, disable security locks, and perform a factory reset. This protects your personal information and helps prepare the phone for inspection
Once your S21+ arrives and passes inspection, payment typically goes out the same day via Zelle, Venmo, Apple Pay, or PayPal.
No. SellMyCellPhone does not purchase phones that are lost, stolen, blocked, blacklisted, or activation locked. A bad ESN/IMEI can also be associated with an outstanding carrier balance, so check your device's status if you're unsure.
Back up your photos and other important data, sign out of your Google and Samsung accounts, remove your SIM card, disable security locks, and perform a factory reset. This protects your personal information and helps prepare the phone for inspection