Does the Samsung Galaxy M21 support 5G?

No, the Galaxy M21 only supports up to 4G LTE networks. In 2026, 4G is still widely available and sufficient for most activities.

How long does the Galaxy M21 battery last?

Thanks to its massive 6000mAh battery, the device lasts an average of 2 days with normal use. It is one of the phones with the best battery life in its price class.

Does this phone have a headphone jack?

Yes, the Galaxy M21 has a standard 3.5mm headphone jack, allowing you to use wired headphones without an adapter.

What is the display quality like?

The device features a 6.4-inch Super AMOLED display with FHD+ resolution, offering deep blacks and vibrant colours, which is rare in its price range.

Can I expand the storage?

Yes, the phone has a dedicated microSD card slot that supports up to 512GB memory cards without sacrificing the second SIM card slot.

Will banking apps work on this phone in 2026?

As the device supports Android 12, most banking apps (like Swedbank, SEB, LHV) will still work for some time, but it's advisable to be cautious for security reasons.

Samsung Galaxy M21

2020Support ended

4.3(8500) · Samsung Official, GSMArena, iFixit

Release year2020

Display6.4 inches

ChipExynos 9611

RAM4GB

Camera48MP

Support ended

Exynos 9611

2020Today2022

Current version

Android 12 (last supported version)

Total support

2 years

Security patches

2024-03

Expert assessment: The last supported Android version is 12. Support ended 2024-03-23.

Price from

82,9 €– 105,4 € -64%

New cost was 229 €

3 in stock

Color

Condition

View offers (3)

12-month warranty·Delivery 2-4 days·14-day returns·Verified device

Pros and Cons

Strengths and weaknesses at a glance.

Why choose

Massive battery
Super AMOLED display
Lightweight
Dedicated memory card slot
3.5mm jack
Good price

What to consider

Slow charging
Plastic body
Outdated software
No 5G
Average performance

Specifications

Detailed Technical Info

Hardware and features in detail.

Screen size: 6.4"
Resolution: 1080 x 2340
Display type: Super AMOLED
Refresh rate: 60Hz
Max brightness: 420 nits
Screen protection: Corning Gorilla Glass 3

Display

Screen size: 6.4"
Resolution: 1080 x 2340
Display type: Super AMOLED
Refresh rate: 60Hz
Max brightness: 420 nits
Screen protection: Corning Gorilla Glass 3

Performance

Processor: Exynos 9611 (10 nm)
CPU cores: Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU: Mali-G72 MP3
RAM: 4GB
AnTuTu score: 195000 (v9)

Camera

Main camera: 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
Ultra-wide: 8 MP, f/2.2, 12mm, 123˚
Telephoto: Not available
Front camera: 20 MP, f/2.2, 26mm (wide)
Video: 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS

Battery

Capacity: 6000 mAh
Charging speed: 15W wired
Wireless charging: No
Battery life: Up to 2 days of normal use

Connectivity

5G: No
Wi-Fi: Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth: 5.0, A2DP, LE
NFC: Yes
USB: USB Type-C 2.0

Body & Dimensions

Dimensions: 159 x 75.1 x 8.9 mm
Weight: 188 g
Materials: Glass front (GG3), plastic back, plastic frame
Water resistance: None

Condition Classes

All devices are fully tested and working.

Good (B)

from 105,4 €

The screen may have a few micro-scratches. The casing has normal signs of wear. Battery 85-90%.

Acceptable (C)

from 82,9 €

Clearly visible signs of use. Best price.

Model characteristics

Common issues that may occur with Samsung Galaxy M21.

GPS signal fluctuation

Moderate

Software bug or antenna contact issue.

Ghost touches

Moderate

Static electricity or screen panel wear.

Repair ~70–95€

Slow charging

Minor

Limited 15W charging speed.

Rapid casing wear

Minor

Soft 'Glasstic' material.

Repair ~20–40€

Greenfox check:Tested and clear

Repairs and Parts6/10 iFixit / GreenFox rating

Battery Replacement

Medium

35–50€Estimated cost

The plastic back cover is removable, but the battery is strongly glued.

Screen Replacement

Medium

70–95€Estimated cost

Screen replacement requires the removal of almost all components.

Charging Port Repair

Easy

30–45€Estimated cost

The charging port is located on a separate daughterboard, which is easy to replace.

Due to the model's popularity, spare parts are widely available.

Environmental Impact

Buying a used device saves valuable resources.

This is equivalent to: Charging a smartphone for 8 years straight Travelling by train from Tallinn to Tartu and back 4 times

CO₂ Saved

42 kg CO2e

Water Saved

11000 liters

E-Waste Avoided

188 grams

Reused

94%

Recycled

Methodology: Fraunhofer Institute / Refurbed.com calculation model (2025)

Who Is This For?

This device is especially well-suited for these users.

Elderly user

A person who needs a phone for calling, reading news, and viewing photos.

Large and clear AMOLED display
Battery that doesn't need daily charging
Simple One UI interface

Student's first phone

An affordable option for a child to stay reachable and use educational apps.

Durable battery for long school days
Affordable price for replacement in case of loss
Good screen for watching videos

Backup phone / Work phone

A reliable second device that is always charged and ready for use.

Exceptional standby time
Dual SIM support
Affordable price

bite Full4G and VoLTE

tele2 Full4G and VoLTE

The device does not support 5G networks. Ideal for use on 4G networks.

Comparisons With Other Models

How this model differs from the competition.

UpgradevsSamsung Galaxy M22

The M22 offers a 90Hz refresh rate, but the M21 has a sharper display (FHD vs HD+) and a larger battery.

Feature	Galaxy M21	Galaxy M22
Display resolution	1080p (FHD+)	720p (HD+)
Battery capacity	6000 mAh	5000 mAh
Refresh rate	60Hz	90Hz

ComparisonvsXiaomi Redmi Note 9

Samsung wins thanks to its Super AMOLED display and significantly larger battery; Xiaomi offers slightly better build quality.

Feature	Galaxy M21	Redmi Note 9
Display type	Super AMOLED	IPS LCD
Battery	6000 mAh	5020 mAh
Fingerprint scanner	Rear	Rear

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Frequently Asked Questions

272,3 €

Warranty up to 12 months

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Prices starting from 82,9 €.

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