Samsung Galaxy A51 vs Samsung Galaxy A55 5G Specs Comparison

Display

Size
6.5-inch	6.6-inch
Resolution
2400 x 1080 px, 20:9 ratio, 405 PPI	2400 x 1080 px, 20:9 ratio, 399 PPI
Technology
Super AMOLED	Super AMOLED
Refresh rate
60Hz	120Hz
Screen-to-body
87.37 %	84.30 %
Peak brightness
	550 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 9611 (10 nm)	Exynos 1480 (5 nm)
Processor
Octa-core, 2300 MHz, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit	Octa-core, 4x 2.7GHz Cortex-A78 + 4x 2.0GHz Cortex-A55
GPU
Mali-G72 MP3	Yes
RAM
4GB (LPDDR4)	8GB
Internal storage
128GB, available to use: 105.9 GB	128GB
Storage expansion
microSDXC up to 512 GB	microSDXC
OS
Android (11, 10), Samsung One UI	Android (14)
Device type
Smartphone	Smartphone

Battery

Capacity
4000 mAh	5000 mAh
Type
Li - Polymer, Not user replaceable	Not user replaceable
Battery life test results
link
Charging
Fast charging	Fast charging
Max charge speed
	Wired: 25.0W

PhoneArena Battery Tests

Battery Life Estimate

5h 22min

Browsing

11h 35min

Video

8h 35min

Gaming

6h 40min

Battery Life Estimate

6h 36min

Browsing

17h 7min

Video

8h 15min

Gaming

9h 39min

Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page.

Camera

Rear
Quad camera	Triple camera
Main camera
48 MP (PDAF) Specifications: Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	50 MP (OIS, Autofocus) Specifications: Aperture size: F1.8 Sensor size: 1/1.56" Pixel size: 1.0 μm
Second camera
12 MP (Ultra-wide) Specifications: Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm	12 MP (Ultra-wide) Specifications: Aperture size: F2.2 Sensor size: 1/3.06" Pixel size: 1.12 μm
Third camera
5 MP (Macro) Specifications: Aperture size: F2.4 Focal Length: 40 mm	5 MP (Macro) Specifications: Aperture size: F2.4
Fourth camera
5 MP (Depth information) Specifications: Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps) Features: Hyperlapse, EIS	3840x2160 (4K UHD) (30 fps)
Front
32 MP (HDR), Video capture: 1920x1080 (Full HD)	32 MP, Video capture: 3840x2160 (4K UHD) (30 fps)

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

132

Overall

140

Photo

123

Video

Find out more details about photo and video scores for all phones we have tested on our PhoneArena Camera Score page.

Design

Dimensions
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)	6.34 x 3.05 x 0.00 inches (161.1 x 77.4 8.2 mm)
Weight
6.07 oz(172.0 g)	7.51 oz(213.0 g)
Materials
Back: Plastic Frame: Plastic	Back: Glass (Corning Gorilla Glass) Frame: Plastic
Resistance
	Yes; IP67
Biometrics
2D Face unlock, Optical in-screen fingerprint	Optical in-screen fingerprint
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	Iceblue, Lilac, Navy, Lemon

Cellular

5G
	Bands 5G Ready
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 39(1900+), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM, eSIM

Multimedia

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

Connectivity & Features

Bluetooth
5.0	5.3
Wi-Fi
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,ax(Wi-Fi 6) Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0, Features: Charging, OTG	Type-C (reversible), Features: Charging
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)	Accelerometer, Gyroscope, Compass
Other
NFC, ANT+	NFC

Regulatory Approval

FCC approval
Date approved: Nov 28, 2019 FCC ID value: A3LSMA515FN
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

Buyers information

Price
$ 400	$ 489
User Manual
This is the official Samsu​ng Galaxy A51 User Guide in English provided from the manufacturer.

Availability

Officially announced
Dec 12, 2019	Mar 11, 2024

Links

Full specifications
Samsung Galaxy A51 Specs	Samsung Galaxy A55 5G Specs
PhoneArena Review
Samsung Galaxy A51 Review	Samsung Galaxy A55 5G Review
User Reviews
Samsung Galaxy A51 User Reviews