How long does the Galaxy A21s battery actually last?

Thanks to the 5000mAh battery and the power-efficient processor, the device reliably lasts 1.5 to 2 days with normal use.

Does this phone support 5G networks?

No, the Galaxy A21s only supports up to 4G (LTE) networks. In 2026, 4G will still be widely available and functional.

Is the screen resolution sufficient for watching videos?

The screen is HD+ (720p). It is sufficient for YouTube and social media, but the image is not as sharp as on more expensive FHD+ screens.

Can I pay in stores with this phone (NFC)?

Yes, most A21s models for the European market are equipped with NFC, which allows you to use Google Pay for payments.

Can a memory card be used with two SIM cards?

Yes, the device has three slots: two for SIM cards and one dedicated slot for a microSD memory card.

Is this phone suitable for gaming?

The device is suitable for simpler games (Candy Crush, Roblox on low settings). Demanding games like PUBG or Genshin Impact will not run smoothly.

Samsung Galaxy A21s

2020Support ended

4.2(28 500) · Samsung Official, GSMArena, iFixit

Release year2020

Display6.5 inches

ChipExynos 850

RAM3GB/4GB LPDDR4X

Camera48MP

Support ended

Exynos 850

2020Today2023

Current version

Android 12

Total support

3 years

Security patches

2024-06

Expert assessment: The device has reached the end of its official software support, but is still suitable for basic needs

Price from

64 €– 166 € -69%

New costs 209 €

20 in stock

Color

Storage

Condition

View offers (20)

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

Pros and Cons

Strengths and weaknesses at a glance.

Why choose

Excellent battery
Quad camera system
Dedicated memory card slot
3.5mm headphone jack
NFC support
Affordable price

What to consider

Low resolution
Slow performance
Slow charging
Software support ended
Plastic body

Specifications

Detailed Technical Info

Hardware and features in detail.

Screen size: 6.5 inches
Resolution: 720 x 1600 pixels (HD+)
Display type: PLS LCD
Refresh rate: 60Hz
Max brightness: 450 nits
Screen protection: Tempered glass

Display

Screen size: 6.5 inches
Resolution: 720 x 1600 pixels (HD+)
Display type: PLS LCD
Refresh rate: 60Hz
Max brightness: 450 nits
Screen protection: Tempered glass

Performance

Processor: Samsung Exynos 850 (8nm)
CPU cores: 8-core (8x2.0 GHz Cortex-A55)
GPU: Mali-G52
RAM: 3GB/4GB LPDDR4X
AnTuTu score: 145000 (v9)

Camera

Main camera: 48 MP, f/2.0, 26mm (wide), PDAF
Ultra-wide: 8 MP, f/2.2, 123˚
Telephoto: Not available
Front camera: 13 MP, f/2.2
Video: 1080p@30fps

Battery

Capacity: 5000 mAh
Charging speed: 15W wired
Wireless charging: No
Battery life: Up to 2 days of normal use

Connectivity

5G: No
Wi-Fi: Wi-Fi 5 (802.11ac)
Bluetooth: 5.0
NFC: Yes (region dependent)
USB: USB Type-C 2.0, OTG

Body & Dimensions

Dimensions: 163.7 x 75.3 x 8.9 mm
Weight: 192 grams
Materials: Plastic frame and back
Water resistance: None

Condition Classes

All devices are fully tested and working.

Very Good (A)

from 90 €

In very good condition. Minimal signs of use.

Good (B)

from 76 €

Few scratches on the casing. The screen may have individual micro-scratches. Battery 85-90%.

C+

Above Average (C+)

from 68 €

Clear signs of use and scratches. Possible minor dents on the frame. Battery at least 80%. All functions tested.

Acceptable (C)

from 64 €

Clearly visible signs of use. Best price.

Model characteristics

Common issues that may occur with Samsung Galaxy A21s.

System slowdown

Moderate

Weak Exynos 850 processor and limited RAM

Screen ghosting

Minor

Technological limitation of PLS LCD panel

Repair ~65–85€

Wi-Fi connection drops

Moderate

Software bug or antenna contact issue

Rapid casing wear

Minor

Soft 'Glasstic' material

Repair ~20–35€

Greenfox check:Tested and clear

Repairs and Parts6/10 iFixit / GreenFox Estimate

Battery Replacement

Medium

35–50€Estimated cost

The back cover is glued, but the battery is accessible after opening

Screen Replacement

Medium

65–85€Estimated cost

Requires removal of almost all components to access the screen

Charging Port Repair

Easy

30–45€Estimated cost

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

Spare parts are widely available as both original and B-grade parts

Environmental Impact

Buying a used device saves valuable resources.

This is equivalent to: Charging a smartphone every day for 8 years A train journey from Tallinn to Tartu and back

CO₂ Saved

45 kg CO2e

Water Saved

9500 liters

E-Waste Avoided

182 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.

Elderly user

A person who needs a phone for calls, WhatsApp, and reading news.

Large screen is easy to read
Battery lasts for several days
Affordable price without unnecessary features

Budget-conscious student

A young person needing their first smartphone for social media and schoolwork.

Good camera for social media
With a memory card, you can add plenty of space for photos
Durable battery for a school day

Second work phone

A necessary device solely for calls, emails, and using banking apps.

Dual-SIM support
NFC for payments
Small investment in a work tool

tele2 Full4G support available

telia Full4G support available

The device does not support 5G networks. In 2026, 4G speeds will still be sufficient for normal use.

Comparisons With Other Models

How this model differs from the competition.

UpgradevsSamsung Galaxy A22

The Galaxy A22 offers a significant leap with its 90Hz Super AMOLED display and better processor, but the A21s remains competitive due to its lower price.

Feature	Galaxy A21s	Galaxy A22
Display type	PLS LCD	Super AMOLED
Refresh rate	60Hz	90Hz
Camera OIS	No	Yes

Cross-shopvsXiaomi Redmi Note 9

Xiaomi offers a higher screen resolution (FHD+), but Samsung's One UI software is more intuitive and stable for many users.

Feature	Galaxy A21s	Redmi Note 9
Screen resolution	720p (HD+)	1080p (FHD+)
Charging speed	15W	18W
User interface	One UI	MIUI

Sell & Trade

Want to sell
Samsung Galaxy A21s?

Buying new or selling old? We pay you up to --- for your Samsung Galaxy A21s. Cash within 24h.

Sell this model to us

Your device value

Instant payoutTo your bank account

Your device value

Instant payoutTo your bank account

Frequently Asked Questions

103 €

Warranty up to 12 months

Ready to buy Samsung Galaxy A21s?

Choose from 20 verified devices.
Prices starting from 64 €.

View all offers

14-day returns

Free delivery from €300