Samsung Galaxy Note9 vs Samsung Galaxy A31 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

9.0
Samsung Galaxy Note9	Samsung Galaxy A31
Released · Aug 24, 2018	Released · Apr 27, 2020
6.4-inch · 2960x1440px	6.4-inch · 2400x1080px
Dual camera	Quad camera
6GB · 128GB	4GB · 64GB
4000 mAh	5000 mAh

Availability

Officially announced
Aug 09, 2018	Mar 24, 2020
Prices (MSRP)
$1000	€300

Design

Dimensions
6.37 x 3.01 x 0.35 inches 161.9 x 76.4 x 8.8 mm	6.27 x 2.88 x 0.34 inches 159.3 x 73.1 x 8.6 mm
Weight
7.09 oz (201.0 g)	6.53 oz (185.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5) Frame: Aluminum	Back: Plastic
Resistance
Water, Dust; IP68
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch)	Optical in-screen fingerprint
Features
Notification light, Stylus
Keys
Left: Volume control, Lock/Unlock key; Right: Other	Right: Volume control, Lock/Unlock key
Colors
Midnight black, Ocean blue, Cloud silver, Lavender purple	Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white

Display

Size
6.4-inch, 83.51% screen-to-body	6.4-inch, 84.88% screen-to-body
Type
Super AMOLED, HDR	Super AMOLED, 60Hz
Resolution
2960x1440px, 18.5:9 ratio, 516 PPI	2400x1080px, 20:9 ratio, 411 PPI
Protection
Corning Gorilla Glass 5

Hardware

System chip
Snapdragon 845 SDM845 (10 nm)	MediaTek Helio P65 MT6768 (12 nm)
Processor
Octa-core 2800 MHz Kryo 385	Octa-core 2x2.0GHz Cortex-A75 6x2.0GHz Cortex-A55
GPU
Adreno 630	Mali-G52 MC2
Memory
6GB (LPDDR4)/128GB 8GB/512GB	4GB (LPDDR4)/64GB (eMMC 5.1) 6GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (10, 9.0 Pie, 8.1 Oreo)	Android (10)

Battery

Type
4000 mAh, Li - Ion	5000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging Qi and Powermat wireless charging	Fast charging
Charge speed
	Wired: 15.0W

Camera

Rear
Dual camera	Quad camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.5/F2.4 Focal length: 26 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
12 MP (Telephoto, OIS, Autofocus) Optical zoom: 2.0x Aperture size: F2.4 Focal Length: 52 mm Sensor size: 1/3.4" Pixel size: 1 μm	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
	5 MP (Macro) Aperture size: F2.4
Fourth camera
	5 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, EIS	1080p (30 fps)
Front
8 MP (Wide Angle, Autofocus) Video capture: QHD (30 fps)	20 MP Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 3.1	Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M4/T3
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Loudspeaker
Features
32-Bit DAC, Dolby Atmos
Screen mirroring
Wireless screen share	Wireless screen share
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 20
4G (TDD) Bands
38, 39, 40, 41, 46	38, 40, 41
3G Bands
5, 8, 4, 2, 1	1, 2, 5, 8
Data Speed
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA	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
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Jul 03, 2018 FCC ID value: A3LSMN960U	Date approved: Mar 08, 2020 FCC ID value: A3LSMA315GL
Measured SAR
Head: 0.27 W/kg Body: 0.76 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.35 W/kg Phablet: 3.90 W/kg	Head: 0.53 W/kg Body: 0.56 W/kg Simultaneous Transmission: 1.42 W/kg Wireless Router: 0.65 W/kg Phablet: 0.89 W/kg

Alternative variants

With 512 GB storage


Memory	8GB/512GB
Prices (MSRP)	$1250

with 128GB storage


Memory	6GB/128GB

International version


System chip	Samsung Exynos 9 9810 (10 nm)
Processor	Octa-core 2900 MHz Exynos M3 and ARM Cortex-A55
GPU	Mali-G72 MP18
4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
4G (TDD) Bands	38, 39, 40, 41
Dual SIM	Yes
Location	GPS, A-GPS, Glonass, Galileo, BeiDou
FCC approval	Date approved: Jul 02, 2018 FCC ID value: A3LSMN960F
Measured SAR	Head: 0.23 W/kg Body: 0.85 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.40 W/kg Phablet: 3.98 W/kg

for Verizon


4G (FDD) Bands	2, 3, 4, 5, 7, 8, 13, 18, 19, 20, 26, 28, 66
3G Bands	5, 8, 2, 1

for AT&T


4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 14, 18, 19, 20, 28, 29, 30, 66

for T-Mobile


4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 27, 66, 71
3G Bands	5, 4, 2, 1

for Sprint


4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71

for U.S. Cellular


4G (FDD) Bands	2, 4, 5, 8, 12, 13, 18, 19, 25, 66, 71
4G (TDD) Bands	38, 39, 40, 46
3G Bands	5, 8, 2, 1

Links

Full specifications
Samsung Galaxy Note9 Specs	Samsung Galaxy A31 Specs
PhoneArena Review
Samsung Galaxy Note9 Review
User Reviews
Samsung Galaxy Note9 User Reviews