Samsung Galaxy Note9 vs Samsung Galaxy A51 Specs Comparison

Availability

Officially announced
Aug 09, 2018	Dec 12, 2019
Prices (MSRP)
6GB/128GB - $1000	$400

Design

Dimensions
6.37 x 3.01 x 0.35 inches 161.9 x 76.4 x 8.8 mm	6.24 x 2.90 x 0.31 inches 158.5 x 73.6 x 7.9 mm
Weight
7.09 oz / 201.0 g	6.07 oz / 172.0 g
Materials
Back: Glass (Corning Gorilla Glass 5) Frame: Aluminum	Back: Plastic Frame: Plastic
Resistance
Water, Dust; IP68
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch)	2D Face unlock, 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 white, Prism Crush pink, Prism Crush blue

Display

Size
6.4-inch, 83.51% screen-to-body	6.5-inch, 87.37% screen-to-body
Type
Super AMOLED, HDR	Super AMOLED, 60Hz
Resolution
2960x1440px, 18.5:9 ratio, 516 PPI	2400x1080px, 20:9 ratio, 405 PPI
Protection
Corning Gorilla Glass 5	Corning Gorilla Glass 3

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
2 (Good)	1.7 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 845 SDM845 (10 nm)	Samsung Exynos 9611 (10 nm)
Processor
Octa-core Kryo 385	Octa-core 2300 MHz 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53
GPU
Adreno 630	Mali-G72 MP3
Memory
6GB (LPDDR4)/128GB 8GB/512GB	4GB (LPDDR4)/128GB 6GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (10, 9.0 Pie, 8.1 Oreo)	Android (11, 10)

Battery

Type
4000 mAh, Li - Ion	4000 mAh, Li - Polymer
Charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging Qi and Powermat wireless charging	Fast charging

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

5h 22min

Browsing

11h 35min

Video

8h 35min

Gaming

6h 40min

Learn more on our PhoneArena Battery Test Results page

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	12 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm
Third camera
	5 MP (Macro) Aperture size: F2.4 Focal Length: 40 mm
Fourth camera
	5 MP (Depth information) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, EIS	4K UHD (30 fps), 1080p (120 fps), 720p (240 fps) Hyperlapse, EIS
Front
8 MP (Wide Angle, Autofocus) Video capture: QHD (30 fps)	32 MP (HDR) 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, Hall (for flip covers), 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, ANT+

Multimedia

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

Cellular

LTE 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, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66, 71
TDD Bands
38, 39, 40, 41, 46	38, 39, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 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
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: Nov 28, 2019 FCC ID value: A3LSMA515FN
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: 0.89 W/kg Body: 1.18 W/kg Simultaneous Transmission: 1.56 W/kg Wireless Router: 1.12 W/kg Phablet: 2.76 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
LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
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

LTE Bands	2, 3, 4, 5, 7, 13, 20, 28, 66
3G Bands	5, 8, 2, 1

for Verizon

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

for AT&T

LTE Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
TDD Bands	41

for AT&T

LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 14, 18, 19, 20, 28, 29, 30, 66

for Sprint

LTE Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
TDD Bands	41

for T-Mobile

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

for Europe

LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66
TDD Bands	38, 40, 41
Dual SIM	Yes

for Sprint

LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71

for U.S. Cellular

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

Discover more

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Full Specs Samsung Galaxy A51 Specs PA Review Samsung Galaxy A51 Review