Galaxy Z Fold3 5G512 GB•Black

4.5/5(131 reviews)

£453.00

Save £1,547.00

Standard Delivery by 14 - 16 OctExpress Delivery by 12 Oct for £12.00

Restored professionally

Based on up to 100-points of inspection

The PhoneMart Promise

Based on up to 100-points of inspection

We measure each battery's health and capacity against strict standards, and replace any that don't make the grade, so you get power you can rely on all day.
The display is switched on and looked over closely for any blemishes, so there are no marks, dust spots or discolouration to spoil the view.
Where a charger is included, the cord and connectors are checked for wear, and the plug is confirmed to fit sockets.
Before it ships, every device gets a thorough professional clean and polish so it feels fresh in your hands.
Every lens is put to work, so we can confirm sharp photos, smooth video and reliable performance on video calls.
A full factory reset wipes the device clean, securely erasing all previous data and restoring the original settings.
We confirm the network status up front, so you know exactly whether the device is locked or unlocked before it arrives.
Cards are inserted to make sure the device reads SIM and memory cards correctly, and that every tray and slot works smoothly.
Each button is pressed to check it responds straight away and does exactly what it should, from volume to lock to power.
If any parts are fitted during refurbishment, they are tested for compatibility and held to the same standards as the originals.
We run the IMEI to confirm it is clean and never blacklisted, and that the device details match the manufacturer's records.
The moisture indicator inside the device is inspected to rule out any history of water or liquid damage.
Every port, including the headphone, USB and Ethernet connections, is checked to make sure it connects and works reliably.
Face and fingerprint unlock, along with any voice recognition, are tested to make sure they work quickly and accurately.
Positioning is checked for accurate GPS, so maps and location apps behave exactly as they should.
External sensors, such as proximity, brightness, laser measurement and heart rate, are checked for precise and responsive readings.
Screws, casing, frames and other mechanical parts are examined to confirm they are original or quality replacements, and any replacement has to match or beat industry standards.
We confirm that Wi-Fi and Bluetooth connect quickly and hold a stable signal.
Speakers and microphones are inspected and fine tuned so audio records and plays back clearly.
The flash and every indicator light are tested to confirm they light up and work correctly.
Any features that are specific to your device are checked against the same standards, so nothing gets missed.

Select the condition

Example image

Body

Visible signs of useVerified partsBattery for daily use

Select the condition

Select a battery option

Select storage

Select the colour

Select the colour

Galaxy Z Fold3 5G

Fair
Standard battery
Black
512 GB

£453.00

£2,000.00 newSave £1,547.00

14-day returns

Set up the return in just a few clicks in your PhoneMart account.

Send the device back within 14 days of receiving it. Return postage is paid by you unless the item is faulty, damaged or not what you ordered.

Get your cash back within 3 business days of the seller receiving the device.

Proudly refurbished by PhoneMart Privacy policy

Comes with

Compatible charging cable

Fair-Standard battery-Black-512 GB

£453.00

£2,000.00 newSave £1,547.00

£453.00

£2,000.00 newSave £1,547.00

Customer reviews for Galaxy Z Fold3 5G

Overall rating

4.5/5

131 verified reviews

Rating details

Appearance: 4.5/5
Battery: 4.3/5
Delivery: 4.6/5

Reviews

Thomas Bennett

Verified purchase

5/5

Reviewed 22/12/2025, United Kingdom.

Excellent

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 13/12/2025

James Hamilton

Verified purchase

5/5

Reviewed 14/12/2025, United Kingdom.

it is good 👍

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 28/11/2025

Wesley Gibson

Verified purchase

5/5

Reviewed 23/10/2025, United Kingdom.

Came fast, well packaged, no issues so far. Great service again from PhoneMart.

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 07/10/2025

Jade Crawford

Verified purchase

5/5

Reviewed 11/09/2025, United Kingdom.

I'm really happy with the phone; it's brilliant.

Galaxy Z Fold3 5GSee item

Purchased 06/09/2025

Rose Ferguson

Verified purchase

5/5

Reviewed 24/06/2025, United Kingdom.

Good quality phone, good service, and a good price. I am happy with it.

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 09/06/2025

Tracey Lloyd

Verified purchase

5/5

Reviewed 27/05/2025, United Kingdom.

This was my first purchase from PhoneMart and I will buy here again. The phone looks like new. I haven't started using it yet because I'm still setting up my accounts. Thanks, saved me a lot of money.

Galaxy Z Fold3 5G 512GB Green Unlocked | PhoneMartSee item

Condition FairPurchased 14/05/2025

Florin Ciobanu

Verified purchase

5/5

Reviewed 23/05/2025, United Kingdom.

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 11/05/2025

Patrick Woods

Verified purchase

5/5

Reviewed 18/03/2025, United Kingdom.

The phone is great but the battery doesn't last as long as the one I got from you before. That's my only issue.

Galaxy Z Fold3 5G 512GB Black Unlocked | PhoneMartSee item

Condition FairPurchased 03/03/2025

Barry Todd

Verified purchase

5/5

Reviewed 16/03/2025, United Kingdom.

Great service. The phone arrived four days early. I would definitely buy from this company again.

Galaxy Z Fold3 5G 256GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 03/03/2025

Olakunle Oldham

Verified purchase

5/5

Reviewed 18/02/2025, United Kingdom.

Nice

Galaxy Z Fold3 5GSee item

Purchased 20/01/2025

Common questions about the Galaxy Z Fold3 5G

Durability

Overall performance

Camera

Screen quality

Black

Colour

512 GB

Storage

Unlocked

Carrier compatibility

12 GB GB

Memory gb

Mobile network

7.6 inch

Screen size in

Physical SIM + eSIM

Sim card

2021

Year of release

When you want a phone that handles both work and entertainment on the go, the Galaxy Z Fold3 5G 2021 delivers a large, foldable 7.6-inch screen that opens up your space for apps, documents, and media. The generous 12 GB of RAM keeps everything running smoothly, so you can switch between tasks without pause.

The Galaxy Z Fold3 5G 2021 is unlocked, so you can choose your preferred network and take advantage of fast 5G connectivity wherever it's available. Dual SIM support with a physical SIM and eSIM means you can manage two lines or plans in one device, perfect for balancing work and personal life.

Key features

Carrier compatibility: Unlocked for any network
Memory: 12 GB RAM for smooth multitasking
Mobile network: 5G connectivity for faster downloads
Screen size: 7.6 inches offers an expansive view
SIM card: Physical SIM plus eSIM support
Year of release: 2021 design and technology

Who is this for?

The Galaxy Z Fold3 5G 2021 suits professionals and creatives who need space to work with multiple apps or content at once. Whether you're handling emails, video calls, or streaming, the foldable screen lets you do more without reaching for another device.

This phone also fits tech enthusiasts who want an unlocked device for flexible carrier options and fast 5G connections. If you value having a phone that adapts to your lifestyle, from business to personal use, this model fits that role well.

What you get and what to know

What you get	Good to know
Large foldable screen expands your workspace	Dual SIM support with physical SIM and eSIM
12 GB RAM smooths multitasking	5G network for faster mobile data
Unlocked device for any carrier	Released in 2021 with proven technology

Why buy it refurbished?

Choosing a refurbished Galaxy Z Fold3 5G 2021 lets you enjoy a premium device while supporting sustainability. Each phone passes up to a 100-point inspection by industry professionals to ensure it works reliably.

Refurbished phones come with a 24-month warranty, free delivery, and 14-day returns, giving you confidence and value without compromise.

ColourBlack

Storage512 GB

Carrier compatibilityUnlocked

Memory gb12 GB GB

Mobile network5G

Screen size in7.6 inch

Sim cardPhysical SIM + eSIM

Year of release2021

Welcome to PhoneMart

The best prices for high-quality renewed goods by sellers we’ve checked and vetted. We don’t mind if you Google us.

Get to know us

24-month warranty
Free delivery on all items
14-day returns
Excellent customer support

Popular searches

Galaxy Z Fold3 5G512 GB•Black

Restored professionally

Select the condition

Select the condition

Select a battery option

Select a battery option

Select storage

Select storage

Select the colour

Select the colour

14-day returns

Comes with

You may also like

Customer reviews for Galaxy Z Fold3 5G

Overall rating

Rating details

Reviews

Popular searches

Common questions about the Galaxy Z Fold3 5G

Key features

Who is this for?

What you get and what to know

Why buy it refurbished?

Welcome to PhoneMart