LG K40 vs Xiaomi Redmi 9 Specs Comparison

Availability

Officially announced
Feb 20, 2019
Prices (MSRP)
$180

Design

Dimensions
6.02 x 2.83 x 0.33 inches 153.0 x 71.9 x 8.3 mm	6.43 x 3.03 x 0.36 inches 163.32 x 77.01 x 9.1 mm
Weight
5.11 oz / 145.0 g	6.98 oz / 198.0 g
Materials
Back: Plastic
Resistance
Shock; MIL-STD-810 certified
Biometrics
Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Keys
Left: Volume control; Right: Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gray, Blue	Carbon gray, Sunset purple, Ocean green

Display

Size
5.7-inch, 76.28% screen-to-body	6.5-inch, 83.27% screen-to-body
Type
IPS LCD	IPS LCD
Resolution
1440x720px, 18:9 ratio, 282 PPI	2340x1080px, 19.5:9 ratio, 395 PPI
Protection
Tempered Glass	Corning Gorilla Glass 3
Features
	Oleophobic coating

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	1.5 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 450 SDM450 (14 nm)	MediaTek Helio G80 (12 nm)
Processor
Octa-core 2000 MHz ARM Cortex-A53	Octa-core 2000 MHz Arm Cortex-A75 and Arm Cortex-A55
GPU
Adreno 506	Mali G52 MC2
Memory
2GB (LPDDR3)/16GB 2GB/32GB	3GB (LPDDR4)/32GB (eMMC 5.1) 4GB/64GB
Storage expansion
microSDXC up to 2000 GB	microSDXC
OS
Android (8.1 Oreo)	Android

Battery

Type
3000 mAh, Li - Polymer	5020 mAh
Charging
	Qualcomm Quick Charge 3.0
Charge speed
	Wired: 18.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

9h 15min

Gaming

7h 3min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera	Quad camera
Main camera
8 MP (PDAF) Aperture size: F2.0 Sensor size: 1/3" Pixel size: 1 μm	13 MP (PDAF) Aperture size: F2.2
Second camera
	8 MP (Ultra-wide) Aperture size: F2.2
Third camera
	5 MP (Macro) Aperture size: F2.4
Fourth camera
	2 MP (Depth information)
Flash
LED	LED
Video recording
1080p (30 fps) Video calling, Video sharing	1080p
Front
5 MP (Flash)	8 MP (HDR) Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	b,g,n Wi-Fi Direct, Hotspot 802.11 b, g, n
USB
microUSB, USB 2.0	Type-C, USB 2.0
Sensors
Accelerometer, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, VoIP, Tethering, Computer sync, OTA sync	NFC, Infrared

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD) Bands
2, 4, 5, 12, 13, 66	1, 2, 3, 4, 5, 7, 8, 20, 28
4G (TDD) Bands
	38, 40, 41
3G Bands
5, 8, 2, 1	1, 2, 4, 5, 8
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes	Yes
VoLTE
	Yes

Alternative variants

International version

System chip	MediaTek Helio P22 MT6762 (12 nm)
Processor	Octa-core 2000 MHz ARM Cortex-A53
GPU	IMG PowerVR GE8320
Memory	32GB
Main camera	16 MP
Front	8 MP
4G (FDD) Bands	1, 3, 7, 8, 20
4G (TDD) Bands	38
Dual SIM	Yes

with 64GB storage

Memory	4GB/64GB

for Metro by T-Mobile

Memory	32GB
OS	Android (9.0 Pie)
Main camera	13 MP
Front	5 MP
4G (FDD) Bands	2, 4, 5, 7, 12, 25, 26, 66, 71
4G (TDD) Bands	41
FCC approval	Date approved: May 28, 2019 FCC ID value: ZNFX420MM
Measured SAR	Head: 0.51 W/kg Body: 0.98 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 0.98 W/kg Phablet: 3.99 W/kg

Links

Full specifications
LG K40 Specs	Xiaomi Redmi 9 Specs
PhoneArena Review
	Xiaomi Redmi 9 Review
User Reviews
LG K40 User Reviews	Xiaomi Redmi 9 User Reviews