Lower mid-range · 2020

Samsung Galaxy M21s

Nobody owns this yet
Our Take
CPU benches near recent entry-level phones like the Samsung Galaxy A14
Best for
Strength All-day battery (6000mAh), AMOLED screen
Extras Curved display
Watch out No more updates, 15W charging (slow)
Skip if Heavy gaming or multitasking
Compare

Full specifications

Display

6.4″ · Super AMOLED · 1080 × 2340 · 60 Hz · HDR
OLED display

A clean OLED panel — colours pop and sunlight visibility is solid.

Screen size
6.4"
Panel type
Super AMOLED
OLED
Resolution
1080 × 2340 px
Refresh rate
60 Hz
Slow for 2026
Brightness
420 nits
HDR
Supported
Protection
Corning Gorilla Glass 3

Performance

Exynos 9611 (10 nm) · 8-core 2.3 GHz · Mali-G72 MP3
Basic CPU

Best for calls, messaging, and very light browsing. Avoid heavy multitasking.

Chipset
Exynos 9611 (10 nm)
Current CPU tier
Entry-level
Launch class
Lower mid-range
AnTuTu
186,200
v8
CPU
8-core, 2.3 GHz
GPU
Mali-G72 MP3
Process
10 nm
RAM type
LPDDR4X RAM
CPU layout
4x Cortex A73 2.3 GHz + 4x Cortex A53 1.67 GHz

Software & updates

Android 10, One UI 2.5 · 4-year support (brand estimate)
Likely end of life

This phone is past its update window — it still works, but new Android versions and most security patches have stopped.

Operating system
Android 10, One UI 2.5
Software support
4 years of updates (brand estimate)
Updates remaining
None — past its update window

Camera

64 MP f/1.8 main · 32 MP selfie · 4K video
4K video

A standard camera setup — sharp in daylight, expect noise in low light.

Main camera
64 MP f/1.8
Ultrawide
8 MP f/2.2
Front camera
32 MP f/2.0
Main sensor
0.8µm
Slow motion
Yes, 240 fps
Camera extras
manual focus
Video
4K @ 30 fps
4K video

Battery

6000 mAh · 15 W wired
All-day

A genuinely all-day battery — comfortably handles streaming and social.

Capacity
6000 mAh
Wired charging
15 W
Slow for 2026
Removable
No

Memory

4 GB RAM · 64 GB · expandable
Tight
RAM
4 GB
Tight for 2026
Storage
64 GB
Fills fast
Configurations
4/64GB · 6/128GB
Storage type
eMMC 5.1
Expandable
Yes

Connectivity

4G LTE · Wi-Fi 4
5G
No
4G LTE
Yes
NFC
No
Wi-Fi
Wi-Fi 4
Bluetooth
5.0
GPS systems
GPS, A-GPS, GLONASS, Beidou
USB
USB-C 2.0
USB OTG
Yes
3.5mm jack
Yes
IR blaster
No
SIM
1× Nano-SIM

Network bands

4G works on all four carriers — no 5G

Radio bands decide whether this phone sees MTN, Glo, Airtel or 9mobile towers — and how strong the signal holds indoors.

M MTN
4G full · no 5G
Full
A Airtel
4G full · no 5G
Full
G Glo
4G works No B28 — signal can get weak indoors and outside the big cities.
Works
9 9mobile
4G full
Full

The bands Nigerian networks use

B3 main band
M A G 9
B7 extra speed
M
B20 indoor reach
M
B28 indoor reach
G
n78 the 5G band
M A

The dots show which network uses each band. ✓ means this phone has it, ✗ means it doesn't.

All reported bands

2G B2, B3, B5, B8
3G B1, B2, B5, B8
4G B1, B2, B3, B5, B7, B8, B12, B13, B17, B20, B26, B28b, B28a

Build & Design

191 g · 8.9 mm
Height
159.2 mm
Width
75.1 mm
Thickness
8.9 mm
Weight
191 g

Sensors

Fingerprint (rear-mounted) · accelerometer · gyro · proximity
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Images and battery life estimates from GSMArena

How it stacks up against the rest.

A few phones around the same price, so you can see what this one does better and what it gives up.

vs

Apple iPhone 12

Trades blows 2 wins 3 losses
Better display tech
Super AMOLED vs OLED panel · 6.4″ vs 6.1″ screen · Tradeoff: 1080 × 2340 vs 1170 × 2532 resolution
113% larger battery capacity
6,000 mAh vs 2,815 mAh battery
Lower benchmark score
186k vs 1.3M AnTuTu · Entry-level vs High-end tier
Less stable camera
No OIS vs OIS · 4K @ 30 fps vs 4K @ 60 fps video · 64 MP · f/1.8 vs 12 MP · f/1.6 main
No 5G
No 5G vs 5G · No NFC vs NFC
vs

Samsung Galaxy S20

Loses on most 5 losses
Less smooth display
Super AMOLED vs Dynamic AMOLED panel · 60 Hz vs 120 Hz refresh · 1080 × 2340 vs 1440 × 3200 resolution
Lower benchmark score
186k vs 623k AnTuTu · Entry-level vs Mid-range tier
Less stable camera
No OIS vs OIS · — vs Telephoto · OIS · 4K @ 30 fps vs 8K @ 24 fps video
No NFC
No NFC vs NFC
Less protected
None vs IP68 protection · 191 g vs 163 g

Where to buy

We don't have any listings for this phone yet. Try searching on Konga or Jiji.