Display
Size:
6.0 inches
5.8 inches
6.5 inches
Resolution:
2880 x 1440 pixels, 18:9 ratio, 537 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI
Technology:
OLED
OLED
Super AMOLED
Screen-to-body:
80.67 %
82.53 %
87.37 %
Colors:
16 777 216
Peak brightness:
550 cd/m2 (nit)
Features:
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
60Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
60Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip:
Qualcomm Snapdragon 845 SDM845
Qualcomm Snapdragon 730 SM7150-AA
Samsung Exynos 9611
Processor:
Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm
GPU:
Adreno 630
Adreno 618
Mali-G72 MP3
RAM:
4GB LPDDR4
6GB LPDDR4
4GB LPDDR4
Internal storage:
64GB, available to use: 49 GB
128GB, not expandable
128GB, available to use: 105.9 GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
Smartphone
OS:
Android (9.0 Pie)
Android (11, 10)
Android (11, 10), Samsung One UI
Battery
Capacity:
3330 mAh
3140 mAh
4000 mAh
Type:
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
USB Power Delivery, Qi wireless charging
USB Power Delivery
Fast charging
Max charge speed:
Wired: 18.0W
Camera
Rear:
Single camera
Single camera
Quad camera
Main camera:
19 MP (Laser and PDAF)
12.2 MP (OIS, PDAF)
48 MP (PDAF)
Specifications:
Aperture size: F2.0; Focal length: 25 mm; Sensor size: 1/2.3"; Pixel size: 1.22 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera:
12 MP (Ultra-wide)
Specifications:
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
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) (960 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features:
HDR, Time-lapse video, Hyperlapse, EIS, Video calling, Video sharing
EIS
Hyperlapse, EIS
Front:
13 MP (Wide Angle, Autofocus)
8 MP
32 MP (HDR)
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
6.22 x 2.87 x 0.39 inches (158 x 73 x 9.9 mm)
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)
Weight:
6.81 oz (193.0 g)
5.04 oz (143.0 g)
6.07 oz (172.0 g)
Materials:
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Resistance:
Water, Dust; IP68
Biometrics:
Fingerprint (touch)
Fingerprint (touch)
2D Face unlock, In-screen fingerprint
Keys:
Right: Volume control, Camera shutter, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Black, Green, Red, White
Just black
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Cellular
LTE (FDD):
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT), 29(700 d), 32(1500 L-band), 66(AWS-3)
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), 17(700 b), 18(800 Lower), 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), 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)
LTE (TDD):
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 41(2600+)
UMTS:
Bands 6(800), 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed:
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A Cat 11 (600/75 Mbit/s), 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
Yes
SIM type:
Nano SIM
Nano SIM, eSIM
Nano SIM
HD Voice:
Yes
VoLTE:
Yes
Multimedia
Headphones:
No 3.5mm jack
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Multiple speakers
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Features:
aptX-HD
aptX, aptX-HD
Dolby Atmos
Screen mirroring:
DLNA, Wireless screen share
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
for Noise cancellation
for Noise cancellation
Connectivity & Features
Bluetooth:
5.0
5.1
5.0
Wi-Fi:
802.11 a, b, g, n, ac, dual-band; Multiple antennas, MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 3.1
Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0
Features:
Mass storage device, OTG, Charging, Headphones port
Charging
Charging, OTG
Location:
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass, Barometer, Step detector, Step counter
Accelerometer, Gyroscope, Compass, Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other:
NFC, VoIP, Tethering, Computer sync, OTA sync
NFC
NFC, ANT+
Hearing aid compatible:
M4, T4
M3, T4
Phone features
Notifications:
Haptic feedback, Music ringtones, Vibration
Other features:
Voice dialing, Voice commands, Voice recording, TTY/TDD
Regulatory Approval
FCC approval:
Date approved:
Aug 03, 2018
Jun 25, 2020
Nov 28, 2019
Measured SAR:
Head:
0.14 W/kg
1.18 W/kg
0.89 W/kg
Body:
0.44 W/kg
1.19 W/kg
1.18 W/kg
Simultaneous Transmission:
1.08 W/kg
1.59 W/kg
1.56 W/kg
Wireless Router:
0.85 W/kg
1.00 W/kg
1.12 W/kg
Phablet:
2.76 W/kg
Buyers information
Price:
$ 900
$ 349
$ 400
User Manual:
This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.
In The Box:
18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool
Availability
Officially announced:
Aug 30, 2018
Aug 03, 2020
Dec 12, 2019
