Sell My Samsung Galaxy S21 5G

Change phone

InstantQuote
Instant Quote
FastPayment
Fast Payment
14-Day LockIn Price
14-Day Lock In Price
FreeReturns
Free Returns
TrustedService
Trusted Service

Choose memory:

Select your phones condition

Excellent

Screen is in perfect or near-perfect condition — no cracks, chips, or scratches visible under normal lighting.
Body and frame are free from any dents, deep scratches, or discolouration
All features fully functional — cameras, speakers, microphone, buttons, and charging port
No signs of liquid or water damage
No scratches, marks, or damage to the screen that affect display quality
Battery Health at or above 80%
(if below 80% then a -£30 deduction will be applied to cover the cost of a replacement battery.)

Offer Price

£87.00

To lock in your price for 14-days - No obligation

Not ready yet?

Please note, quotes are not a guarantee and are subject to change if the device arrives in a condition different to what was selected. To lock in these prices you need to complete the no obligation order.

Sell My Samsung Galaxy S21 5G

Sell your old Samsung Galaxy S21 5G today, instant quote and fast payment.

Change phone

Choose memory

Select your phones condition

Excellent

Screen is in perfect or near-perfect condition — no cracks, chips, or scratches visible under normal lighting.
Body and frame are free from any dents, deep scratches, or discolouration
All features fully functional — cameras, speakers, microphone, buttons, and charging port
No signs of liquid or water damage
No scratches, marks, or damage to the screen that affect display quality
Battery Health at or above 80%
(if below 80% then a -£30 deduction will be applied to cover the cost of a replacement battery.)

Excellent

Screen is in perfect or near-perfect condition — no cracks, chips, or scratches visible under normal lighting.
Body and frame are free from any dents, deep scratches, or discolouration
All features fully functional — cameras, speakers, microphone, buttons, and charging port
No signs of liquid or water damage
No scratches, marks, or damage to the screen that affect display quality
Battery Health at or above 80%
(if below 80% then a -£30 deduction will be applied to cover the cost of a replacement battery.)

Offer Price:

£87.00

To lock in your price for 14-days - No obligation

Not ready yet?

InstantQuote
Instant Quote
FastPayment
Fast Payment
14-Day LockIn Price
14-Day Lock In Price
FreeReturns
Free Returns
TrustedService
Trusted Service

Sell Your Phone In Three Easy Steps.

1. Get A Price

Let us know which smartphone you would like to sell, to ensure your price is guaranteed for 14-days.

2. Send To Fonehouse

Free delivery or collection at times that suit you with trusted couriers.

3. Get Paid Securely

Subject to your device health check we could pay you the same day of receipt.

How Much Is Your Samsung Galaxy S21 5G Worth In 2026?

The Samsung Galaxy S21 5G remains one of Samsung's most popular handsets. Despite being a few generations old, demand for the Samsung Galaxy S21 5G on the refurbished market remains very strong, particularly for the 128GB and 256GB models. How much your Samsung Galaxy S21 5G is worth depends on three factors: storage size, condition, and whether it is unlocked. At Fonehouse, we pay the following for Samsung Galaxy S21 5G devices in October 2026.

Current Samsung Galaxy S21 5G trade-in prices — updated October 2026

Condition		128GB	256GB
Excellent		£87.00	£125.00
Very Good	most Common	£68.00	£98.00
Good		£40.00	£71.00
Damaged		£16.00	£16.00

Most Samsung Galaxy S21 5G sellers receive between £68.00 and £98.00

— the Very Good 128GB price is the most common outcome. More than 4 in 5 customers trade in successfully. Be honest when grading your device: if our engineers find the condition doesn't match what you've selected, we'll contact you with a revised offer or we will return your phone free of charge.

Does Samsung Galaxy S21 5G storage size affect the trade-in price?

Yes, but the difference is modest for the Samsung Galaxy S21 5G compared to newer models. Moving from 128GB to 256GB adds around £30.00 to your quote: the jump from 256GB to adds a further . The condition of your device has a far greater impact on price than storage size alone.

Is it worth selling my Samsung Galaxy S21 5G now?

Trade-in values for the Samsung Galaxy S21 5G are strong, but prices typically fall further after each new samsung release. If you are holding onto your Samsung Galaxy S21 5G ahead of upgrading, selling sooner rather than later will generally return a higher price. Our 14-day price lock means you can agree a price today and send your device when it suits you.

How To Prepare Your Samsung Galaxy S21 5G For Trade-In

Before sending your Samsung Galaxy S21 5G , there are a few steps that will speed up the process and protect your personal data.

Back up your phone

Go to Settings → Accounts and backup. Select Back up data under Google Drive or Samsung Cloud to save your apps, contacts, and settings. For photos and large files, you can also connect your phone to a computer and use the official Samsung Smart Switch application.

Remove accounts and disable SmartThings Find

Go to Settings → Accounts and backup → Manage accounts. Tap your Samsung account, choose Remove account, and enter your password. Repeat this step for your Google account. This turns off device tracking protection; if this is not done, the trade-in cannot be processed.

Factory reset your phone

Go to Settings → General management → Reset → Factory data reset. Review the listed accounts, tap Reset, enter your security PIN or pattern, and select Delete all to permanently wipe your data.

Remove your SIM / eSIM

Locate the SIM tray (usually on the top or bottom edge of the device) and use a SIM eject tool to remove your physical card. If you are using an eSIM, select the option to delete downloaded SIMs (eSIMs) when prompted during the factory reset.