Samsung Galaxy A51 vs Samsung Galaxy Note 20 Ultra Specs Comparison

Availability

Officially announced
Dec 12, 2019	Aug 05, 2020
Prices (MSRP)
$400	12GB/128GB - $1300 12GB/256GB - €1266 12GB/512GB - $1450

Design

Dimensions
6.24 x 2.90 x 0.31 inches 158.5 x 73.6 x 7.9 mm	6.49 x 3.04 x 0.32 inches 164.8 x 77.2 x 8.1 mm
Weight
6.07 oz / 172.0 g	7.34 oz / 208.0 g
Materials
Back: Plastic Frame: Plastic	Back: Glass (Corning Gorilla Glass Victus) Frame: Stainless steel
Resistance
	Water, Dust; IP68
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Ultrasonic in-screen fingerprint
Features
	Stylus
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue	Mystic black, Mystic bronze, Mystic white

Display

Size
6.5-inch, 87.37% screen-to-body	6.9-inch, 91.63% screen-to-body
Type
Super AMOLED, 60Hz	Dynamic AMOLED, 120Hz, HDR
Resolution
2400x1080px, 20:9 ratio, 405 PPI	3088x1440px, 19.3:9 ratio, 496 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass Victus

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
1.7 (Good)	1.6 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Samsung Exynos 9611 (10 nm)	Snapdragon 865+ SM8250-AB (7 nm)
Processor
Octa-core 2300 MHz 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53	Octa-core 1x3.1GHz Kryo 585 3x2.42GHz Kryo 585 4x1.80GHz Kryo 585
GPU
Mali-G72 MP3	Adreno 650
Memory
4GB (LPDDR4)/128GB 6GB/128GB	12GB (LPDDR5)/128GB (UFS 3.0) 12GB/256GB 12GB/512GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 1000 GB
OS
Android (11, 10)	Android (13, 12, 11, 10)

PhoneArena Performance Test

GeekBench 6 Single
Untested	1208
GeekBench 6 Multi
Untested	3047
3D Mark High
Untested	1510
3D Mark Low
Untested	1097

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
4000 mAh, Li - Polymer	4500 mAh, Li - Polymer
Charging
Fast charging	Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging

PhoneArena Battery Tests

Battery Life Estimate

5h 22min

Browsing

11h 35min

Video

8h 35min

Gaming

6h 40min

Battery Life Estimate

4h 37min

Browsing

9h 33min

Video

7h 0min

Gaming

7h 17min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	108 MP (OIS, Laser and PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.33" Pixel size: 0.8 μm
Second camera
12 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
5 MP (Macro) Aperture size: F2.4 Focal Length: 40 mm	12 MP (Telephoto, OIS, PDAF) Optical zoom: 5.0x Aperture size: F3.0 Focal Length: 120 mm Pixel size: 1.0 μm
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 (30 fps), 1080p (120 fps), 720p (240 fps) Hyperlapse, EIS	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Time-lapse video, Hyperlapse, Object tracking, EIS
Front
32 MP (HDR) Video capture: 1080p	10 MP (PDAF, HDR) Video capture: 4K UHD

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	Wi-Fi 6 MIMO, Wi-Fi Direct, Hotspot 802.11 ax
USB
Type-C, USB 2.0	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC, ANT+

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Dolby Atmos	32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

5G Bands
	n2, n5, n41, n66, n71, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71
4G (TDD) Bands
38, 39, 41	38, 39, 40, 41, 46, 48
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM	Nano SIM
HD Voice
	Yes

Regulatory Approval

FCC approval
Date approved: Nov 28, 2019 FCC ID value: A3LSMA515FN	Date approved: Jul 06, 2020 FCC ID value: A3LSMN986U
Measured SAR
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	Head: 0.78 W/kg Body: 1.04 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.18 W/kg Phablet: 3.92 W/kg

Alternative variants

with 128GB storage

Memory	6GB/128GB

for Europe

System chip	Samsung Exynos 990 (7 nm)
Processor	Octa-core 2x2.73GHz Exynos M5 2x2.5GHz Cortex-A76 4x2.0 GHz Cortex-A55
GPU	Mali G77 MP11
Memory	256GB
Prices (MSRP)	€1266

for Verizon

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

with 512GB storage

Memory	512GB
Prices (MSRP)	$1450

for AT&T

4G (FDD) Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

for Verizon

5G Bands	n260, n261, mmWave
4G (FDD) Bands	2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 66
4G (TDD) Bands	38, 39, 40, 41, 46

for Sprint

4G (FDD) Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

for Europe

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

Discover more

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