
Get £12.25 more if you choose EnviroCash as your preferred payment option at the checkout.
If you want to sell my Samsung Galaxy S23 128GB, you are in luck. At Envirofone we make it easy and hassle‑free. We launched in 2005, so for years we have paid people quickly when they choose to trade in or sell devices. With same‑day payments and free postage, selling your S23 128GB is straightforward. Our experience — backed by over 44 000 reviews on Trustpilot — means you can trust us to give you a fair price and handle everything professionally.
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The table below shows what we currently pay for your Galaxy S23 256Gb based on storage size and condition. Prices update regularly to reflect market demand. Select your options above to lock in today's price with a 14-day guarantee.
Prices shown are for unlocked devices. Network-locked devices receive approximately 10% less. Choose EnviroCash at checkout for an additional 7% bonus.
Five quick steps before you post your Galaxy S23 256Gb. Each one protects your data and lets us turn around your payment faster.
Use Google One or your phone's built-in backup to save photos, contacts and apps.
Go to Settings → Accounts and remove your Google account. This clears Factory Reset Protection so we can wipe and resell the device.
Our new payment method gives you 7% more for your old device to spend on our Shop.
We test each phone or device individually so you get an individual price.
We offer faster payments, so you get paid directly into your bank on the same day we process your device!*
*subject to your device(s) being processed before 3pm
We don't need the SIM, charger or accessories — keep them for your next device. Your trade-in price is for the Galaxy S23 256Gb alone.
Settings → System → Reset → Factory data reset. This wipes your data so the next owner starts fresh.
We post you a sturdy padded envelope with a prepaid Royal Mail tracked label. Drop it at any post box or Post Office and we'll handle the rest.
Use this guide to grade your Galaxy S23 256Gb accurately. Honest grading means you get the price we quote with no last-minute deductions.

Powers on, fully functional, no cracks or chips, screen and back glass free of scratches, casing in near-perfect condition. The original or close-to-original look.

Powers on and fully functional, with everyday wear: light scratches on the screen or casing, minor scuffs or marks. No cracks or screen damage.

Anything else: cracked screen or back, water damage, faulty battery, won't power on. We still pay a fair price — select Faulty above.
Every Galaxy S23 256Gb that gets refurbished and resold instead of going to landfill saves tens of kilograms of CO₂-equivalent emissions and keeps valuable rare-earth metals in circulation. Smartphones contain gold, silver, copper, lithium and cobalt — materials with a real environmental cost to mine fresh.
Envirofone has been part of the UK's circular-electronics movement since 2005. Every device we buy is tested, refurbished and given a second life with a new owner — or, if it's beyond repair, recycled responsibly so the materials don't end up in a landfill.
Envirofone has been helping people sell their phones and tech since 2005. We've paid over £160 million to customers and earned over 44,000 Trustpilot reviews. Here's why thousands of people choose us to sell their Galaxy S23 256Gb: