Notification Center

This is our new notification center. Inside, you will find updates on the most important things happening right now.

Notifications

Hmm, push notifications seem to be disabled in your browser. You can enable them from the 'Settings' icon in the URL bar of your browser.

www.phonearena.com

Nokia Lumia 820 vs Samsung Galaxy J6+ vs Samsung Galaxy A51

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

4.3 inches
6.0 inches
6.5 inches

Resolution:

800 x 480 pixels, 217 PPI
1480 x 720 pixels, 18.5:9 ratio, 274 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI

Technology:

AMOLED
TFT
Super AMOLED

Refresh rate:

60Hz

Screen-to-body:

62.04 %
73.60 %
87.37 %

Colors:

16 777 216
16 777 216

Touchscreen:

Capacitive, Multi-touch

Features:

Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon S4 Plus MSM8960
Qualcomm Snapdragon 425 MSM8917
Samsung Exynos 9611

Processor:

Dual-core, 1500 MHz, Krait
Quad-core, 1400 MHz, ARM Cortex-A53, 64-bit, 28 nm
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU:

Adreno 225
Adreno 308
Mali-G72 MP3

RAM:

1GB LPDDR2
3GB
4GB LPDDR4

Internal storage:

8GB
32GB, available to use: 22.4 GB
128GB, available to use: 105.9 GB

Storage expansion:

microSDXC up to 64 GB
microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Windows Phone, 8
Android (9.0 Pie, 8.1 Oreo), Samsung One UI
Android (11, 10), Samsung One UI

Battery

Capacity:

1650 mAh
3300 mAh
4000 mAh

Type:

Li - Ion, User replaceable
Not user replaceable
Li - Polymer, Not user replaceable

Battery life test results:

Charging:

Fast charging

Camera

Rear:

Single camera
Dual camera
Quad camera

Main camera:

8 MP (Autofocus)
13 MP (PDAF)
48 MP (PDAF)

Specifications:

Aperture size: F2.2; Focal length: 28 mm; Sensor size: 1/3.2"
Aperture size: F1.9; Focal length: 28 mm; Sensor size: 1/3"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera:

5 MP (Depth information)
12 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
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:

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features:

Continuous autofocus, Video calling
Video calling, Video sharing
Hyperlapse, EIS

Front:

0.3 MP VGA
8 MP (Flash)
32 MP (HDR)

Video capture:

640x480 (VGA)
1920x1080 (Full HD)

Design

Dimensions:

4.87 x 2.70 x 0.39 inches (123.8 x 68.5 x 9.9 mm)
6.35 x 3.03 x 0.31 inches (161.4 x 76.9 x 7.9 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight:

5.64 oz (160.0 g)
6.28 oz (178.0 g)
6.07 oz (172.0 g)

Materials:

Back: Plastic; Frame: Plastic

Biometrics:

Fingerprint (touch)
2D Face unlock, In-screen fingerprint

Keys:

Right: Volume control, Camera shutter, Lock/Unlock key
Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Black, Purple, Yellow, Blue, Red, White, Gray
Black, Silver, Red
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD):

Bands 18(800 Lower), 8(900), 3(1800), 1(2100), 7(2600)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
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), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 41(2600+)

UMTS:

Bands 5(850), 8(900), 2(1900), 1(2100)
Bands 5(850), 8(900), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE Cat 3 (100/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, UMTS
LTE Cat 4 (150/50 Mbit/s), HSPA, HSUPA
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

SIM type:

Micro SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Album art cover, Background playback
Album art cover, Background playback, Dolby Atmos
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM, Stereo, RDS
FM, Stereo
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

3.0
4.2
5.0

Wi-Fi:

802.11 a, b, g, n, dual-band; Hotspot, Wi-Fi Direct
802.11 b, g, n; Hotspot, Wi-Fi Direct
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, Charging
Mass storage device, Charging
Charging, OTG

Location:

GPS, A-GPS, S-GPS, Glonass, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Other:

NFC, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+

Phone features

Notifications:

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Haptic feedback, Music ringtones, Vibration

Other features:

Voice dialing, Voice commands, Voice recording, TTY/TDD
Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval:

Date approved:

Oct 18, 2012
Nov 28, 2019

FCC ID value:

PYARM-825
A3LSMA515FN

Measured SAR:

Head:

1.34 W/kg
0.89 W/kg

Body:

0.71 W/kg
1.18 W/kg

Simultaneous Transmission:

1.58 W/kg
1.56 W/kg

Wireless Router:

0.99 W/kg
1.12 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 400

User Manual:

This is the official Samsu​ng Galaxy A51 User Guide in English provided from the manufacturer.

In The Box:

Nokia AC-50 MicroUSB Charger, Nokia Charging and Data Cable CA-190CD, Nokia Headset WH-208, Product user guide
Charger, microUSB cable, headphones, SIM Removal tool, Documentation

Availability

Officially announced:

Sep 05, 2012
Sep 21, 2018
Dec 12, 2019
FCC OKs Cingular\'s purchase of AT&T Wireless