Does the Samsung Galaxy S21 support 5G networks?

Yes, the Galaxy S21 is a fully 5G-capable device, compatible with all major operators' 5G frequencies in Estonia, Latvia, Lithuania, and Finland.

Does the S21 model have a memory card slot?

No, the MicroSD card slot was removed from the Galaxy S21 series. You will need to use the internal storage (128GB or 256GB) or cloud services for file storage.

Is the device waterproof?

Yes, the device has an IP68 rating, meaning it is dust and water-resistant up to 1.5 meters of freshwater for up to 30 minutes.

What is the refresh rate of the Galaxy S21 display?

The S21 features a 120Hz adaptive display, which makes scrolling and gaming exceptionally smooth, adjusting as needed to save battery.

Does the S21 support dual SIM cards?

Yes, the device supports two physical Nano-SIM cards or a combination of one physical SIM card and one eSIM.

Can the camera record 8K video?

Yes, the main camera allows recording video in 8K resolution at 24 frames per second, offering exceptional detail.

Samsung Galaxy S21

2021Support ended

4.5(28 500) · Samsung Official, iFixit, GSMArena

Release year2021

Display6.2 inches

ChipExynos 2100

RAM8GB LPDDR5

Camera12MP

Support ended

Exynos 2100

2021Today2025

Current version

Android 15 (One UI 7.1)

Total support

4 years

Security patches

2026-01

Expert assessment: The device has received its last major OS update, security patches will continue for a limited time

Price from

132 €– 259 € -84%

New costs 849 €

17 in stock

Color

Storage

Condition

View offers (17)

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

Pros and Cons

Strengths and weaknesses at a glance.

Why choose

Compact size
120Hz display
Capable camera system
5G ready
Affordable price in 2026
Fast software

What to consider

Plastic back
No memory card slot
Average battery life
Heating under load
Software support ending

Specifications

Detailed Technical Info

Hardware and features in detail.

Screen size: 6.2 inches
Resolution: 1080 x 2400 pixels (FHD+)
Display type: Dynamic AMOLED 2X
Refresh rate: 48-120Hz
Max brightness: 1300 nits (peak)
Screen protection: Corning Gorilla Glass Victus

Display

Screen size: 6.2 inches
Resolution: 1080 x 2400 pixels (FHD+)
Display type: Dynamic AMOLED 2X
Refresh rate: 48-120Hz
Max brightness: 1300 nits (peak)
Screen protection: Corning Gorilla Glass Victus

Performance

Processor: Exynos 2100 (5nm) - European model
CPU cores: 8-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55)
GPU: Mali-G78 MP14
RAM: 8GB LPDDR5
AnTuTu score: 750000 (v9)

Camera

Main camera: 12 MP, f/1.8, 26mm (wide), Dual Pixel PDAF, OIS
Ultra-wide: 12 MP, f/2.2, 13mm, 120˚
Telephoto: 64 MP, f/2.0, 29mm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom
Front camera: 10 MP, f/2.2, 26mm, Dual Pixel PDAF
Video: 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps

Battery

Capacity: 4000 mAh
Charging speed: 25W wired
Wireless charging: Yes (15W Qi/PMA)
Battery life: Up to 12 hours of mixed usage

Connectivity

5G: Yes
Wi-Fi: Wi-Fi 6
Bluetooth: 5.0
NFC: Yes
USB: USB Type-C 3.2, OTG

Body & Dimensions

Dimensions: 151.7 x 71.2 x 7.9 mm
Weight: 169 grams
Materials: Plastic back (Glasstic), aluminum frame, glass front and back
Water resistance: IP68 (1.5m 30 min)

Condition Classes

All devices are fully tested and working.

A+

Excellent (A+)

from 214 €

The device looks like new. No scratches on the screen or body. Battery health is over 90%.

Best Value

Very Good (A)

from 181 €

In very good condition. Minimal signs of use.

Good (B)

from 181 €

May have a few micro-scratches on the screen or frame. Battery health 85-90%. Fully tested.

C+

Above Average (C+)

from 144 €

Visible signs of use, scratches on the body. The screen may have light scratches that do not interfere with use. Battery health at least 80%.

Acceptable (C)

from 132 €

Clearly visible signs of use. Best price.

Model characteristics

Common issues that may occur with Samsung Galaxy S21.

Overheating

Moderate

Thermal management of the Exynos 2100 chipset.

Green line on screen

Critical

Hardware defect in the screen connection.

Repair ~160–220€

Rapid battery drain

Moderate

Natural battery degradation and high power consumption of the 120Hz display.

Repair ~55–85€

Inaccurate fingerprint sensor

Minor

The ultrasonic sensor does not work well with thick screen protectors.

Greenfox check:Tested and clear

Repairs and Parts4/10 iFixit

Battery Replacement

Medium

55–85€Estimated cost

The battery is strongly glued and requires heating and careful removal.

Screen Replacement

Critical

160–220€Estimated cost

Screen replacement requires removing almost all components as it is glued to the frame.

Charging Port Repair

Medium

45–75€Estimated cost

The charging port is on a separate daughterboard, making replacement easier than motherboard repair.

Spare parts are widely available as both original and high-quality aftermarket options.

Environmental Impact

Buying a used device saves valuable resources.

This is equivalent to: Charging a smartphone for 9 years straight A flight from Tallinn to Riga

CO₂ Saved

52 kg CO2e

Water Saved

11500 liters

E-Waste Avoided

169 grams

Reused

88%

Recycled

12%

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

Who Is This For?

This device is especially well-suited for these users.

Budget-conscious student

Looking for an affordable yet capable phone for social media and schoolwork.

Excellent price-to-quality ratio
Very good cameras for content creation
Compact and fits in a pocket

Business user (secondary phone)

Needs a reliable and fast device for handling work matters alongside their primary device.

Samsung DeX support
Secure thanks to Knox platform
eSIM capability

Elderly user

Prefers a clear display and a well-known brand that is not too large or heavy.

Lightweight
Very bright and readable screen
Easy Mode available

tele2 Full5G support available

telia FullAll modern network services supported

The European model (SM-G991B) supports all frequency bands in the Baltics and Finland.

Comparisons With Other Models

How this model differs from the competition.

UpgradevsSamsung Galaxy S22

The S22 offers better build quality (glass back) and a more powerful processor, but the S21's battery life is often superior due to its larger capacity and more efficient display.

Feature	Galaxy S21	Galaxy S22
Material	Plastic	Glass
Battery	4000 mAh	3700 mAh
Software Support	Until 2026	Until 2027

Cross-shopvsiPhone 12

The S21 wins in terms of display refresh rate (120Hz vs 60Hz) and zoom capabilities, while the iPhone 12 offers longer software support and more stable video quality.

Feature	Galaxy S21	iPhone 12
Display	120Hz AMOLED	60Hz OLED
Zoom	3x Hybrid	None
Ecosystem	Android/Open	iOS/Closed

Comparisons: Samsung Galaxy S22 vs Samsung Galaxy S21

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