Mobile's first marketplace
Our free inspection turns your “used” phone into a “refurbished” one – and higher prices.
Our 90-point diagnostic test conforms to industry refurbished practice
Free verification and certified data wipe
Gain up to £144 vs. trade-in prices
Iphone 13 pro max 128gb sold on 8th March 2023 vs network’s trade-in valuations
This is awkward. Here we are going on about Samsung’s ultimate smartphone, and you’re thinking of selling one. The truth is, there are loads of reasons why you might need to offload a great phone - from upgrades or downgrades, to simply wanting a change of scene. So whatever your reasons to sell a Samsung Galaxy S21 Ultra 5G, we’ll help you get the most money for yours.
Why is that? Well, we offer mobile phone buyers the protection of an industry-leading verification and inspection process. We give every used phone a secure data wipe, and restore its condition from simply used to certified refurbished. As if that wasn’t enough, we stand by each phone sold through our marketplace, adding on a 24-month warranty, completely free.
When people buy a phone through Mozillion, they know they can trust it. Buyers pay more, sellers like you get more, and we look after the details.
Shouldn’t I trade in my Galaxy S21 Ultra 5G?
Honestly, you could miss out on £100s if you do. The networks won’t pay what your phone’s truly worth, and you’ll only get a discount on a new one. What if you’d rather downgrade and free up some cash?
Mozillion doesn’t just help you sell for more. It pays real money - you can use it to buy a new phone, or absolutely anything else you like.
How do I sell my Galaxy S21 Ultra 5G?
We’ve made it as easy as a trade-in to sell your Galaxy S21 Ultra 5G. There’s no need to take photos, write a description or even deal with any buyers. Just tell us a little about your phone: 128, 256 or 512GB? Black, brown, navy, silver or titanium? And is it unlocked, or tied to a UK network?
Next, tell us what condition it’s in. Select from:
- Brand New - literally never out of the box
- Pristine - used, but immaculate
- Excellent - looks immaculate at arm’s length
- Good - lived a bit, but no cracks or dents
That’s all we need to know! You can choose to Sell Now to the highest current bid, or set an Asking Price and wait to see if someone matches it. When your phone sells, just send it to us within two working days. We’ll look after everything else.
Capacity:
Network:
Select your phone's condition:
It doesn’t matter if your device is locked to a network as Mozillion unlock all device before they are shipped to the Buyer. You don’t need to include the original box or accessories but can if you choose and we will recycle them for you.
£265
Select your phone spec above
By listing this phone for sale you’re confirming you are the owner and it is in new condition, in its original box, sealed and unopened. Due to the value of the device you may be required to provide proof of ownership / purchase.
By listing this phone for sale you’re confirming you are the owner and it is in Good condition.
By listing this phone for sale you’re confirming you are the owner and it is in Excellent condition.
By listing this phone for sale you’re confirming you are the owner and it is in Good as New condition.
14-day money back
Mozillion backs every seller’s phone with a money back guarantee, so if the phone is not the right one for you, you can return it within 14 days of delivery for a full refund.
We also cover every seller’s phone with a 30-day faulty return, so if the phone develops a fault, you can rest assured that we will either replace it or issue you with a full refund.
24 months warranty
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