Google Pixel 4 vs Samsung Galaxy A51 vs Samsung Galaxy A31 - specs comparison

Display

Size:

5.7 inches

6.5 inches

6.4 inches

Resolution:

2280 x 1080 pixels, 19:9 ratio, 443 PPI

2400 x 1080 pixels, 20:9 ratio, 405 PPI

2400 x 1080 pixels, 20:9 ratio, 411 PPI

Technology:

OLED

Super AMOLED

Screen-to-body:

77.32 %

87.37 %

84.88 %

Features:

90Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

60Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

60Hz refresh rate, Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 855 SM8150

Samsung Exynos 9611

MediaTek Helio P65 MT6768

Processor:

Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm

Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

Octa-core, 2000 MHz, Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm

GPU:

Adreno 640

Mali-G72 MP3

Mali-G52 MC2

RAM:

6GB LPDDR4

4GB LPDDR4

Internal storage:

64GB, not expandable

128GB, available to use: 105.9 GB

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

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (11, 10)

Android (11, 10), Samsung One UI

Android (10), Samsung One UI

Battery

Capacity:

2800 mAh

4000 mAh

5000 mAh

Type:

Not user replaceable

Li - Polymer, Not user replaceable

Battery life test results:

link

Charging:

USB Power Delivery, Qi wireless charging

Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Dual camera

Quad camera

Main camera:

12.2 MP (OIS, PDAF)

48 MP (PDAF)

Specifications:

F1.7; 28 mm; 1/2.55"; 1.4 μm

F2.0; 26 mm; 1/2"; 0.8 μm

Second camera:

16 MP (Telephoto, OIS, PDAF)

12 MP (Ultra-wide)

8 MP (Ultra-wide)

Specifications:

Aperture size: F2.4; Focal Length: 45 mm; Pixel size: 1 μm

Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm

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

Third camera:

5 MP (Macro)

Specifications:

Aperture size: F2.4; Focal Length: 40 mm

Aperture size: F2.4

Fourth camera:

5 MP (Depth information)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm

Aperture size: F2.4

Video recording:

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

1920x1080 (Full HD) (30 fps)

Features:

OIS, Time-lapse video, EIS

Hyperlapse, EIS

Front:

8 MP (Dual-Camera, Time-of-Flight (ToF))

32 MP (HDR)

20 MP

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

5.79 x 2.71 x 0.32 inches (147.1 x 68.8 x 8.2 mm)

6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

6.27 x 2.88 x 0.34 inches (159.3 x 73.1 x 8.6 mm)

Weight:

5.71 oz (162.0 g)

6.07 oz (172.0 g)

6.53 oz (185.0 g)

Materials:

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

Back: Plastic; Frame: Plastic

Back: Plastic

Resistance:

Water, Dust; IP68

Biometrics:

3D Face unlock

2D Face unlock, In-screen fingerprint

In-screen fingerprint

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Just black, Clearly white, Oh so orange

Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush 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), 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), 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)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

Bands 38(2600), 39(1900+), 41(2600+)

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

UMTS:

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

Bands 5(850), 8(900), 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

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes

SIM type:

Nano SIM, eSIM

Nano SIM

Multimedia

Headphones:

No 3.5mm jack

3.5mm jack

Speakers:

Earpiece, Multiple speakers

Earpiece, Loudspeaker

Features:

aptX-HD

Dolby Atmos

Screen mirroring:

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0

Wi-Fi:

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 2.0

Features:

Charging, Headphones port

Charging, OTG

Location:

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

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

Accelerometer, Gyroscope, Compass

Other:

NFC

NFC, ANT+

NFC

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Sep 03, 2019

Nov 28, 2019

FCC ID value:

A4RG020I link

A3LSMA515FN link

Measured SAR:

Head:

1.20 W/kg

0.89 W/kg

Body:

1.34 W/kg

1.18 W/kg

Simultaneous Transmission:

1.59 W/kg

1.56 W/kg

Wireless Router:

1.01 W/kg

1.12 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 799

$ 400

€ 300

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, 1m USB-C to USB-C cable, Quick Start Guide, Quick Switch Adapter, SIM tool

Availability

Officially announced:

Oct 15, 2019

Dec 12, 2019

Mar 24, 2020