Motorola One Action vs Samsung Galaxy A51 vs Google Pixel 4a - specs comparison

Display

Size:

6.3 inches

6.5 inches

5.8 inches

Resolution:

2520 x 1080 pixels, 21:9 ratio, 435 PPI

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

2340 x 1080 pixels, 19.5:9 ratio, 444 PPI

Technology:

IPS LCD

Super AMOLED

OLED

Screen-to-body:

81.47 %

87.37 %

82.53 %

Features:

Ambient light sensor, Proximity sensor

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

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

Hardware

System chip:

Samsung Exynos 7 Octa 9609

Samsung Exynos 9611

Qualcomm Snapdragon 730 SM7150-AA

Processor:

Octa-core, 2200 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

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

Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm

GPU:

Mali-G72 MP3

Adreno 618

RAM:

4GB

4GB LPDDR4

6GB LPDDR4

Internal storage:

128GB

128GB, available to use: 105.9 GB

128GB, not expandable

Storage expansion:

microSDXC up to 1000 GB

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (10, 9.0 Pie)

Android (10), Samsung One UI

Android (11, 10)

Battery

Capacity:

3500 mAh

4000 mAh

3140 mAh

Type:

Li - Polymer, Not user replaceable

Battery life test results:

link

Charging:

Motorola TurboPower

Fast charging

USB Power Delivery

Max charge speed:

Wired: 18.0W

Camera

Rear:

Triple camera

Quad camera

Single camera

Main camera:

12 MP (PDAF)

48 MP (PDAF)

12.2 MP (OIS, PDAF)

Specifications:

F1.8; 1.25 μm

F2.0; 26 mm; 1/2"; 0.8 μm

F1.7; 27 mm; 1/2.55"; 1.4 μm

Second camera:

16 MP (Ultra-wide)

12 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1 μm

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

Third camera:

5 MP (Depth information)

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) (60 fps), 1280x720 (HD) (120 fps)

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

Features:

Time-lapse video, Hyperlapse, Continuous autofocus, EIS

Hyperlapse, EIS

EIS

Front:

12 MP (HDR)

32 MP (HDR)

8 MP

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.30 x 2.80 x 0.36 inches (160.1 x 71.2 x 9.15 mm)

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

5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)

Weight:

6.21 oz (176.0 g)

6.07 oz (172.0 g)

5.04 oz (143.0 g)

Materials:

Back: Plastic

Back: Plastic; Frame: Plastic

Resistance:

Splash; IPX2

Biometrics:

2D Face unlock, Fingerprint (touch)

2D Face unlock, In-screen fingerprint

Fingerprint (touch)

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Denim blue, Pearl white

Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Just black

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), 25(1900+), 26(850+), 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), 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), 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)

LTE (TDD):

Bands 38(2600), 41(2600+)

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

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

UMTS:

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

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

Dual SIM:

Shared with microSD

Yes

SIM type:

Nano SIM

Nano SIM, eSIM

Multimedia

Headphones:

3.5mm jack

Speakers:

Earpiece, Loudspeaker

Earpiece, Multiple speakers

Features:

Dolby Mobile

Dolby Atmos

aptX, aptX-HD

Screen mirroring:

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0, EDR

5.0

5.1

Wi-Fi:

802.11 a, b, g, n, ac; Wi-Fi Direct, Hotspot

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0

Type-C (reversible), USB 3.1

Features:

Charging, Mass storage device

Charging, OTG

Charging

Location:

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

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

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

Sensors:

Accelerometer, Gyroscope, Compass

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

Accelerometer, Gyroscope, Compass, Barometer

Other:

NFC

NFC, ANT+

NFC

Hearing aid compatible:

M4, T3

M3, T4

Regulatory Approval

FCC approval:

Date approved:

Nov 28, 2019

Jun 25, 2020

FCC ID value:

A3LSMA515FN link

A4RG025J link

Measured SAR:

Head:

0.89 W/kg

1.18 W/kg

Body:

1.18 W/kg

1.19 W/kg

Simultaneous Transmission:

1.56 W/kg

1.59 W/kg

Wireless Router:

1.12 W/kg

1.00 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 350

$ 400

$ 349

User Manual:

This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.

In The Box:

10W Charger, USB-C Cable, SIM Pin, Guides, Protect cover, Earphones (for selected countries)

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 16, 2019

Dec 12, 2019

Aug 03, 2020