Samsung Galaxy A40 vs Xiaomi Redmi Note 9 Specs Comparison

Availability

Officially announced
Apr 10, 2019	Apr 30, 2020

Design

Dimensions
5.69 x 2.72 x 0.31 inches 144.4 x 69.2 x 7.9 mm	6.39 x 3.04 x 0.35 inches 162.3 x 77.2 x 8.9 mm
Weight
4.94 oz / 140.0 g	7.02 oz / 199.0 g
Materials
Back: Plastic Frame: Plastic	Frame: Plastic
Resistance
	Splash
Biometrics
2D Face unlock, Fingerprint (touch)	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Coral, Blue, White	Forest green, Polar white, Midnight gray

Display

Size
5.9-inch, 85.73% screen-to-body	6.5-inch, 83.52% screen-to-body
Type
Super AMOLED	IPS LCD
Resolution
2340x1080px, 19.5:9 ratio, 437 PPI	2340x1080px, 19.5:9 ratio, 395 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass 5

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	0.8 (Excellent)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Exynos 7904 (14 nm)	MediaTek Helio G85 (12 nm)
Processor
Octa-core 1800 MHz ARM Cortex-A73 and ARM Cortex-A53	Octa-core 2000 MHz Arm Cortex-A75 and ArmCortex-A55
GPU
Mali-G71 MP2	Mali G52 MC2
Memory
4GB (LPDDR4)/64GB	3GB (LPDDR4)/64GB (eMMC 5.1) 4GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 128 GB
OS
Android (11, 10, 9.0 Pie)	Android (10)

Battery

Type
3100 mAh, Li - Polymer	5020 mAh, Li - Polymer
Charging
Samsung Adaptive Fast Charging	Fast charging Reverse wired charging
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

10h 43min

Gaming

7h 34min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Dual camera	Quad camera
Main camera
16 MP (PDAF) Aperture size: F1.7 Focal length: 27 mm Sensor size: 1/2.8" Pixel size: 1.12 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
5 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/5" Pixel size: 1.12 μm	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.2 μm
Third camera
	2 MP (Macro, Autofocus) Aperture size: F2.4 Pixel size: 1.75 μm
Fourth camera
	2 MP Aperture size: F2.4 Sensor size: 1/5" Pixel size: 1.7 μm
Flash
LED	LED
Video recording
1080p (30 fps) Hyperlapse, Video calling, Video sharing	1080p (30 fps), 720p (120 fps)
Front
25 MP Video capture: 1080p (30 fps)	13 MP (HDR) Video capture: 1080p (30 fps)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 2.0	Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync	NFC, Infrared

Multimedia

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

Cellular

LTE Bands
1, 3, 5, 7, 8, 20	1, 2, 3, 4, 5, 7, 8, 20, 28
TDD Bands
38, 40, 41	38, 40, 41
3G Bands
1, 2, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A Cat 12/13 (600/150 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	Yes
SIM type
Nano SIM	Nano SIM
VoLTE
	Yes

Regulatory Approval

FCC approval
Date approved: Mar 08, 2019 FCC ID value: A3LSMA405FN
Measured SAR
Head: 0.51 W/kg Body: 0.46 W/kg Simultaneous Transmission: 1.02 W/kg Wireless Router: 0.61 W/kg

Alternative variants

with 128GB storage

Memory	4GB/128GB

Discover more

Full Specs Samsung Galaxy A40 Specs

Full Specs Xiaomi Redmi Note 9 Specs PA Review Xiaomi Redmi Note 9 Review