Samsung Galaxy A8 (2018) vs Samsung Galaxy A31

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$417 VIEW ON amazon
$214 VIEW ON amazon

Display

Size

5.6 inches
6.4 inches

Resolution

2220 x 1080 pixels, 18.5:9 ratio,
441 PPI
2400 x 1080 pixels, 20:9 ratio,
411 PPI

Technology

Super AMOLED
Super AMOLED

Screen-to-body

75.60 %
84.88 %

Features

Scratch-resistant glass (Corning Gorilla Glass 4), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip

Samsung Exynos 5 Octa 7885
MediaTek Helio P65 MT6768

Processor

Octa-core, 2200 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2000 MHz, Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm

GPU

Mali-G71
Mali-G52 MC2

RAM

4GB LPDDR4
4GB LPDDR4

Internal storage

64GB
64GB (eMMC 5.1), available to use: 46.2 GB

Storage expansion

microSDXC up to 256 GB
microSDXC up to 512 GB

OS

Android (9.0 Pie, 8.0 Oreo, 7.1 Nougat), Samsung One UI
Android (10), Samsung One UI

Battery

Capacity

3000 mAh
5000 mAh

Type

Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable

Charging

Fast charging
Fast charging

Max charge speed

 
Wired: 15.0W

Camera

Rear

Single camera
Quad camera

Main camera

16 MP (PDAF)
48 MP (PDAF)

Specifications

Aperture size: F1.7
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

 
5 MP (Macro)

Specifications

 
Aperture size: F2.4

Fourth camera

 
5 MP (Depth information)

Specifications

 
Aperture size: F2.4

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features

Hyperlapse, EIS, Video calling, Video sharing
 

Front

16 MP (Dual-Camera)
20 MP

Design

Dimensions

5.87 x 2.78 x 0.33 inches (149.2 x 70.6 x 8.4 mm)
6.27 x 2.88 x 0.34 inches (159.3 x 73.1 x 8.6 mm)

Weight

6.07 oz (172.0 g)
the average is 6.2 oz (176 g)
6.53 oz (185.0 g)
the average is 6.2 oz (176 g)

Materials

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic

Resistance

Water, Dust; IP 68
 

Biometrics

Fingerprint (touch)
In-screen fingerprint

Features

Notification light
 

Colors

Black, Gold, Orchid grey, Blue
Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white

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), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD)

LTE (TDD)

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data Speed

LTE-A Cat 11 (600/75 Mbit/s), HSPA, HSUPA
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
 

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, dual-band; Wi-Fi Direct, Hotspot

USB

Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0

Features

Charging, Mass storage device
Charging, OTG

Location

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

Sensors

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

Other

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

Regulatory Approval

FCC approval

 
 

Date approved

Nov 14, 2017
 

FCC ID value: A3LSMA530F link
 

Measured SAR

 
 

Head

0.26 W/kg
 

Body

0.76 W/kg
 

Simultaneous Transmission

1.54 W/kg
 

Wireless Router

0.98 W/kg
 

Buyers information

Price

 
€ 300
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