Display
Size:
6.5 inches
6.1 inches
Resolution:
2400 x 1080 pixels, 20:9 ratio, 405 PPI
2532 x 1170 pixels, 19.5:9 ratio, 457 PPI
Technology:
Super AMOLED
OLED
Refresh rate:
60Hz
60Hz
Screen-to-body:
87.37 %
87.24 %
Peak brightness:
1200 cd/m2 (nit)
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
HDR support, Oleophobic coating, Scratch-resistant glass (Ceramic Shield), Ambient light sensor, Proximity sensor
Hardware
System chip:
Samsung Exynos 9611 (10 nm)
Apple A14 Bionic (5 nm)
Processor:
Octa-core, 2300 MHz, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Hexa-core, 3100 MHz, 64-bit
GPU:
Mali-G72 MP3
Yes
RAM:
4GB LPDDR4
4GB LPDDR4
Internal storage:
128GB, available to use: 105.9 GB
64GB (NVMe), not expandable
Storage expansion:
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
iOS (16.x, 15.x, 14.x)
Battery
Capacity:
4000 mAh
2815 mAh
Type:
Li - Polymer, Not user replaceable
Li - Ion, Not user replaceable
Charging:
Fast charging
USB Power Delivery, Qi wireless charging, MagSafe wireless charging
Max charge speed:
Wireless: 15.0W
Camera
Rear:
Quad camera
Dual camera
Main camera:
48 MP (PDAF)
12 MP (Sapphire crystal lens cover, OIS, PDAF)
Specifications:
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.6; Focal length: 26 mm
Second camera:
12 MP (Ultra-wide)
12 MP (Ultra-wide, Sapphire crystal lens cover)
Specifications:
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Aperture size: F2.4; Focal Length: 13 mm
Third camera:
5 MP (Macro)
Specifications:
Aperture size: F2.4; Focal Length: 40 mm
Fourth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps)
Features:
Hyperlapse, EIS
OIS, HDR, Time-lapse video, Continuous autofocus, Picture-taking during video recording
Front:
32 MP (HDR)
12 MP (EIS, HDR, Slow-motion videos)
Video capture:
1920x1080 (Full HD)
3840x2160 (4K UHD) (60 fps)
Design
Dimensions:
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)
5.78 x 2.81 x 0.29 inches (146.7 x 71.5 x 7.4 mm) , thickness with camera 0.35 inches (8.88 mm)
Weight:
6.07 oz (172.0 g)
5.78 oz (164.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Glass; Frame: Aluminum
Resistance:
Water, Dust; IP68
Biometrics:
2D Face unlock, In-screen fingerprint
3D Face unlock
Keys:
Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key
Colors:
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Black, White, Red, Green, Blue, Purple
Cellular
5G:
n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79, n260, n261, Sub-6, mmWave
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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600)
4G (TDD):
Bands 38(2600), 39(1900+), 41(2600+)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500), 46, 48(3600)
3G:
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:
Yes
SIM type:
Nano SIM
Nano SIM, eSIM
HD Voice:
Yes
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
No 3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Multiple speakers
Features:
Dolby Atmos
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
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, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Lightning
Features:
Charging, OTG
Charging, Headphones port
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, Barometer
Other:
NFC, ANT+
NFC, UMA (Wi-Fi Calling)
Hearing aid compatible:
M3, T4
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
$ 829
User Manual:
This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.
In The Box:
USB-C to Lightning Cable, Documentation
Availability
Officially announced:
Dec 12, 2019
Oct 13, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless