Display
Size:
6.5 inches
6.6 inches
Resolution:
2400 x 1080 pixels, 20:9 ratio, 405 PPI
1600 x 720 pixels, 20:9 ratio, 266 PPI
Technology:
Super AMOLED
Super AMOLED
Screen-to-body:
87.37 %
84.26 %
Features:
60Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor
Hardware
System chip:
Samsung Exynos 9611
Qualcomm Snapdragon 750G SM7225
Processor:
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm
Octa-core, 2200 MHz, Kryo 570, 64-bit, 8 nm
GPU:
Mali-G72 MP3
Adreno 619
RAM:
4GB LPDDR4
4GB LPDDR4
Internal storage:
128GB, available to use: 105.9 GB
128GB, available to use: 106 GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 1000 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
Android (11, 10), Samsung One UI
Battery
Capacity:
4000 mAh
5000 mAh
Type:
Li - Polymer, Not user replaceable
Not user replaceable
Charging:
Fast charging
Samsung Adaptive Fast Charging
Max charge speed:
Wired: 15.0W
Camera
Rear:
Quad camera
Quad camera
Main camera:
48 MP (PDAF)
48 MP (PDAF)
Specifications:
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Pixel size: 0.8 μm
Second camera:
12 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications:
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Aperture size: F2.2
Third camera:
5 MP (Macro)
5 MP (Macro)
Specifications:
Aperture size: F2.4; Focal Length: 40 mm
Aperture size: F2.4
Fourth camera:
5 MP (Depth information)
5 MP (Depth information)
Specifications:
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.4
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1280x720 (HD) (480 fps)
Features:
Hyperlapse, EIS
Front:
32 MP (HDR)
20 MP (Autofocus)
Video capture:
1920x1080 (Full HD)
Design
Dimensions:
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)
6.47 x 2.99 x 0.34 inches (164.4 x 75.9 x 8.6 mm)
Weight:
6.07 oz (172.0 g)
6.81 oz (193.0 g)
Materials:
Back: Plastic; Frame: Plastic
Biometrics:
2D Face unlock, In-screen fingerprint
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
Prism Dot black, Prism Dot white, Prism Dot grey
Cellular
5G:
n1, n3, n5, n7, n8, n28, Sub-6
LTE (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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 28(700 APT)
LTE (TDD):
Bands 38(2600), 39(1900+), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
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, HSUPA 5.76 Mbit/s
Dual SIM:
Shared with microSD
SIM type:
Nano SIM
Nano SIM
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
Connectivity & Features
Bluetooth:
5.0
5.0
Wi-Fi:
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features:
Charging, OTG
Charging
Location:
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, 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
Apr 08, 2021
FCC ID value:
A3LSMA515FN
A3LSMA426U
Measured SAR:
Head:
0.89 W/kg
1.11 W/kg
Body:
1.18 W/kg
1.25 W/kg
Simultaneous Transmission:
1.56 W/kg
1.59 W/kg
Wireless Router:
1.12 W/kg
1.06 W/kg
Phablet:
2.76 W/kg
3.81 W/kg
Buyers information
Price:
$ 400
€ 340
User Manual:
This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.
This is the official Samsung Galaxy A42 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Dec 12, 2019
Sep 02, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless