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Upper mid-range · 2021

Xiaomi Redmi K40

Sold for ₦255,000 · 1 sellers·Last checked 1d ago

Nobody owns this yet
Our Take
CPU benches near recent mid-range phones like the Google Pixel Fold Camera shares the Samsung Galaxy A51's main sensor
Best for
Strength 120Hz AMOLED
Extras Cooling system, Curved display
Watch out No Google Play, No more updates
6.67″ AMOLED · 120Hz
870 5G 6 / 128 GB
4520 mAh 33W charging
48 MP 3 rear · 20 MP selfie
5G Wi-Fi 6 · NFC
See 1 prices Compare

Full specifications

Display

6.67″ · Super AMOLED · 1080 × 2400 · 120 Hz · HDR
OLED + smooth

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

Screen size
6.67"
Panel type
Super AMOLED
OLED
Resolution
1080 × 2400 px
Refresh rate
120 Hz
Smooth
Brightness
1300 nits
HDR
HDR10+
HDR
Protection
Corning Gorilla Glass 5

Performance

Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) · 8-core 3.2 GHz · Adreno 650
Everyday capable

Daily apps and casual games run smoothly — heavy gaming will drop frames.

Chipset
Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
Current CPU tier
Mid-range
Launch class
Upper mid-range
AnTuTu
802,870
v10
CPU
8-core, 3.2 GHz
GPU
Adreno 650
Process
7 nm
RAM type
RAM LPDDR5
Storage type
UFS Storage 3.1
CPU layout
1x Cortex A77 3.20 GHz + 3x Cortex A77 2.4 GHz + 4x Cortex A55 1.8 GHz

Software & updates

Android 11, MIUI 12 · 2-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 11, MIUI 12
Software support
2 years of updates (brand estimate)
Updates remaining
None — past its update window

Camera

48 MP f/1.8 main · 20 MP selfie · 4K video
4K video

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

Main camera
48 MP f/1.8
Ultrawide
8 MP f/2.2
Macro
5 MP f/2.4
Front camera
20 MP f/2.5
Main sensor
Sony IMX582 Exmor RS, 1/2.96", 0.6µm
Mainstream sensor
Same sensor in
Samsung Galaxy A51 , Samsung Galaxy A34
Slow motion
Yes, 960 fps
Camera extras
manual focus
Video
4K @ 30 fps
4K video

Battery

4520 mAh · 33 W wired

Battery is average for the class — fine for daily use.

Capacity
4520 mAh
Wired charging
33 W
Removable
No

Audio

Stereo · Dolby Atmos · Hi-Res
Stereo speakers
Speakers
Stereo
Stereo
Dolby Atmos
Supported
Hi-Res audio
Supported
Audio features
Hi-Res audio, Dolby Atmos

Memory

6 GB RAM · 128 GB
RAM
6 GB
Storage
128 GB
Configurations
6/128GB · 8/128GB · 8/256GB · 12/256GB
Storage type
UFS 3.1
Expandable
No

Connectivity

5G · NFC · Wi-Fi 6
Modern radios
5G
Yes
4G LTE
Yes
NFC
Yes
Contactless
Wi-Fi
Wi-Fi 6
Modern Wi-Fi
Bluetooth
5.1
GPS systems
GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), Galileo (E1+E5a), NavIC System, QZSS (L1 + L5)
USB
USB-C 2.0
USB OTG
Yes
3.5mm jack
No
IR blaster
No
SIM
1× Nano-SIM

Network bands

4G works on all four carriers — 5G on MTN & Airtel

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

M MTN
4G works · 5G works No B20 — signal can get weak indoors and outside the big cities.
Works
A Airtel
4G full · 5G works
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 BC0, B2, B3, B5, B8
3G B1, B2, B5, B6, B8, B19
4G B1, B2, B3, B5, B7, B8, B18, B19, B26, B28a
5G n1, n3, n28a, n41, n78, n79

Build & Design

196 g · 7.8 mm
Height
163.7 mm
Width
76.4 mm
Thickness
7.8 mm
Weight
196 g

Sensors

Fingerprint (side-mounted) · accelerometer · gyro · proximity
Sensors
Fingerprint (side-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 13

Trades blows 2 wins 3 losses
Smoother display
Super AMOLED vs OLED panel · 120 Hz vs 60 Hz refresh · 6.67″ vs 6.1″ screen
40% larger battery capacity
33 W vs 20 W charging · 4,520 mAh vs 3,240 mAh battery
Lower benchmark score
803k vs 1.3M AnTuTu · Mid-range vs High-end tier
Less stable camera
No OIS vs OIS · 4K @ 30 fps vs 4K @ 60 fps video · 48 MP · f/1.8 vs 12 MP · f/1.6 main
Less protected
None vs IP68 protection · 196 g vs 174 g
₦195k cheaper Full comparison
vs

Samsung Galaxy S21 5G

Loses on most 1 win 4 losses
13% larger battery capacity
4,520 mAh vs 4,000 mAh battery
Weaker display tech
Super AMOLED vs Dynamic AMOLED panel · Tradeoff: 6.67″ vs 6.2″ screen
Lower performance tier
Mid-range vs Upper mid-range tier
Less stable camera
No OIS vs OIS · — vs Telephoto · OIS · 4K @ 30 fps vs 8K @ 24 fps video
Less protected
None vs IP68 protection · 196 g vs 169 g
₦5k pricier Full comparison

Where to buy

1 seller·New from ₦255,000

Prices move fast. Open the seller's page and confirm before you pay.

Jiji New
₦255,000
DOZZYDATA TELEGLOBAL
6.2 yrs · 249 feedback · 256GB
View deal
More listings:
Konga · Jiji

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