Display
Size:
5.5 inches
5.4 inches
6.5 inches
Resolution:
2560 x 1440 pixels, 538 PPI
2560 x 1440 pixels, 540 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI
Technology:
IPS LCD
AMOLED
Super AMOLED
Screen-to-body:
72.46 %
68.03 %
87.37 %
Peak brightness:
500 cd/m2 (nit)
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
ShatterShield, 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 808 MSM8992
Qualcomm Snapdragon 810 MSM8994
Samsung Exynos 9611
Processor:
Hexa-core, 1800 MHz, ARM Cortex-A57 and ARM Cortex-A53, 64-bit, 20 nm
Octa-core, 2000 MHz, ARM Cortex-A57 and ARM Cortex-A53, 64-bit
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm
GPU:
Adreno 418
Adreno 430
Mali-G72 MP3
RAM:
3GB LPDDR3
3GB
4GB LPDDR4
Internal storage:
32GB, available to use: 21.9 GB
64GB
128GB, available to use: 105.9 GB
Storage expansion:
microSDXC up to 2000 GB
microSDXC up to 2000 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
Smartphone
OS:
Android (6.0 Marshmallow, 5.1 Lollipop), LG UX UI
Android (7.0 Nougat, 6.0 Marshmallow, 5.1 Lollipop)
Android (10), Samsung One UI
Battery
Capacity:
3000 mAh
3760 mAh
4000 mAh
Type:
Li - Ion, User replaceable
Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Qualcomm Quick Charge 2.0
Fast charging, Qi and Powermat wireless charging
Fast charging
Camera
Rear:
Single camera
Single camera
Quad camera
Main camera:
16 MP (OIS, Laser autofocus)
21 MP (PDAF)
48 MP (PDAF)
Specifications:
Aperture size: F1.8; Focal length: 28 mm; Sensor size: 1/2.6"; Pixel size: 1.12 μm
Aperture size: F2.0
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) (30 fps), 1280x720 (HD) (120 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features:
OIS, Continuous autofocus, Picture-taking during video recording, Video light, Video calling, Video sharing
HDR, Video calling, Video sharing
Hyperlapse, EIS
Front:
8 MP
5 MP (Flash)
32 MP (HDR)
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
5.86 x 3.00 x 0.39 inches (148.9 x 76.1 x 9.8 mm)
5.90 x 3.07 x 0.36 inches (149.8 x 78 x 9.2 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)
Weight:
5.47 oz (155.0 g)
5.96 oz (169.0 g)
6.07 oz (172.0 g)
Materials:
Back: Plastic
Back: Plastic; Frame: Plastic
Resistance:
Splash
Biometrics:
2D Face unlock, In-screen fingerprint
Features:
Notification light, Interchangeable covers
Interchangeable covers
Keys:
Back: Volume control, Camera shutter, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Black, Gray, Brown, White
Black, White
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Cellular
LTE (FDD):
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 17(700 b), 25(1900+)
Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c)
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+), 41(2600+)
UMTS:
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed:
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE Cat 4 (150/50 Mbit/s), HSPA, HSUPA, UMTS
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type:
Micro SIM
Nano SIM
Nano SIM
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Album art cover, Background playback, Custom equalizer, Preset equalizer
Album art cover, Background playback
Dolby Atmos
Screen mirroring:
DLNA, Wireless screen share, SlimPort
Wireless screen share
Wireless screen share
Radio:
FM, Stereo, RDS
FM
Additional microphone(s):
for Noise cancellation
for Noise cancellation
for Noise cancellation
Connectivity & Features
Bluetooth:
4.1
4.1
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; MIMO
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
microUSB, USB 2.0
microUSB, USB 2.0
Type-C (reversible), USB 2.0
Features:
Mass storage device, OTG, Video out, Charging
Mass storage device, Charging
Charging, OTG
Location:
GPS, A-GPS, S-GPS, Glonass
GPS, A-GPS
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass, Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other:
NFC, Tethering, Computer sync, OTA sync
NFC, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+
Hearing aid compatible:
M3, T3
Regulatory Approval
FCC approval:
Date approved:
Jul 16, 2015
Aug 12, 2015
Nov 28, 2019
Measured SAR:
Head:
0.75 W/kg
1.38 W/kg
0.89 W/kg
Body:
0.38 W/kg
0.17 W/kg
1.18 W/kg
Simultaneous Transmission:
1.52 W/kg
1.58 W/kg
1.56 W/kg
Wireless Router:
0.34 W/kg
0.24 W/kg
1.12 W/kg
Phablet:
2.76 W/kg
EU SAR:
Head:
0.61 W/kg
Buyers information
Price:
$ 720
$ 400
User Manual:
This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.
In The Box:
Handsfree, Charger, USB cable, Manual
Availability
Officially announced:
Apr 28, 2015
Oct 27, 2015
Dec 12, 2019