Galaxy M21

Name: Refurbished Galaxy M21
Brand: Samsung
Availability: OutOfStock
Rating: 4.5 (2 reviews)

4.5/5(2 reviews)

£89.00

Save £100.00

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.

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Example image

Body

Visible signs of useVerified partsBattery for daily use

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Select a battery option

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Galaxy M21

Fair
Standard battery
Blue
64 GB

£89.00

£189.00 newSave £100.00

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-Blue-64 GB

£89.00

£189.00 newSave £100.00

£89.00

£189.00 newSave £100.00

Customer reviews for Galaxy M21

Overall rating

4.5/5

2 verified reviews

Rating details

Appearance: 4.5/5
Battery: 4.5/5
Delivery: 3.5/5

Reviews

Lynn Hutchinson

Verified purchase

5/5

Reviewed 22/11/2024, United Kingdom.

The website is easy to use and there are lots of choices. I'm very happy with my refurbished phone, my second from PhoneMart. Unfortunately, the first refurbished phone I had didn't keep its charge well, so I got this new one.

Galaxy M21See item

Purchased 06/11/2024

Sana Marshall

Verified purchase

4/5

Reviewed 22/03/2026, United Kingdom.

Galaxy M21See item

Purchased 03/03/2026

Common questions about the Galaxy M21

Durability

Overall performance

Camera

Screen quality

Blue

Colour

64 GB

Storage

Triple (3x)

Camera type

Unlocked

Carrier compatibility

Compatible with latest update

USB-C + Jack 3.5mm

Connector

0,89 cm

Depth

Foldable

20 megapixels

Front camera

When you want a smartphone that handles daily tasks and media with ease, the Samsung Galaxy M21 released in 2020 fits the bill. Its 6.4-inch Super AMOLED display puts vibrant colors and sharp detail right where you need them, making video streaming and browsing visually engaging. The phone's design balances size and weight, measuring 15.9 cm tall and 7.51 cm wide while weighing 188 g, so it feels comfortable in your hand or pocket.

The Samsung Galaxy M21 gives you a capable triple camera setup with a 48-megapixel main sensor, perfect for capturing everyday moments in detail. A 20-megapixel front camera ensures your selfies come out clear and sharp. With 4 GB of RAM, the phone handles everyday apps and multitasking smoothly. It supports a dual physical SIM setup and runs on Android, making it a flexible choice for both personal and work use.

Key features

Screen size: 6.4 inches Super AMOLED for vivid visuals
Memory: 4 GB RAM for smooth multitasking
Main camera: 48 megapixels triple camera setup
Front camera: 20 megapixels for clear selfies
Connectivity: Unlocked with 4G mobile network
Storage expandability: microSDXC slot for extra space

Who is this for?

The Samsung Galaxy M21 is a solid choice for anyone who wants to enjoy video, photos, and social apps on a vibrant screen without fuss. It's well suited for students or professionals needing a reliable unlocked phone with dual SIM flexibility. It also fits well for people who like to capture everyday life with a versatile camera setup and prefer a clear front camera for selfies or video calls.

If you want a phone that balances screen quality with smooth daily use and camera versatility, the Samsung Galaxy M21 serves those needs consistently. Its size and weight make it practical to carry all day, while its Android OS and hardware keep your apps running comfortably.

What you get and what to know

What you get	Good to know
Triple rear cameras with a 48MP main sensor	Dual SIM slots support two physical SIM cards
6.4-inch Super AMOLED screen for rich colors	Runs Android without the latest OS update
Expandable storage via microSDXC card slot	Connectors include USB-C and 3.5mm jack

Why buy it refurbished?

Choosing a refurbished Samsung Galaxy M21 supports sustainability by extending the life of quality electronics. Each phone undergoes up to a 100-point inspection by professionals to ensure full functionality and reliability. All devices are factory reset and graded by cosmetic condition before delivery.

Refurbished options come with free delivery, a 24-month warranty, and 14-day returns, offering value and peace of mind while reducing electronic waste.

ColourBlue

Storage64 GB

Camera typeTriple (3x)

Carrier compatibilityUnlocked

Compatible with latest updateNo

ConnectorUSB-C + Jack 3.5mm

Depth0,89 cm

FoldableNo

Front camera20 megapixels

Height15,9 cm

Main camera48 megapixels

Memory gb4 GB GB

Mobile network4G

OsAndroid

Resolution1080 x 2340

Sar body1,13

Sar head0,492

Screen size in6.4 inch

Screen typeSuper AMOLED

Sd card slotmicroSDXC

Sim cardDual Physical SIM

Weight188 g g

Width7,51 cm

Year of release2020

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Common questions about the Galaxy M21

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What you get and what to know

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