Samsung Galaxy M30 vs Samsung Galaxy A51 vs Google Pixel 4a

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

Display

Size:

6.4 inches
6.5 inches
5.8 inches

Resolution:

2280 x 1080 pixels, 19.5:9 ratio, 395 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI

Technology:

Super AMOLED
Super AMOLED
OLED

Screen-to-body:

86.66 %
87.37 %
82.53 %

Colors:

16 777 216

Features:

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

Hardware

System chip:

Samsung Exynos 7 Octa 7904
Samsung Exynos 9611
Qualcomm Snapdragon 730 SM7150-AA

Processor:

Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 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-G71 MP2
Mali-G72 MP3
Adreno 618

RAM:

6GB LPDDR4
4GB LPDDR4
6GB LPDDR4

Internal storage:

128GB, available to use: 107.6 GB
128GB, available to use: 105.9 GB
128GB, not expandable

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

5000 mAh
4000 mAh
3140 mAh

Type:

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

Battery life test results:

Charging:

Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging
Fast charging
USB Power Delivery

Max charge speed:

Wired: 18.0W

Camera

Rear:

Triple camera
Quad camera
Single camera

Main camera:

13 MP (PDAF)
48 MP (PDAF)
12.2 MP (OIS, PDAF)

Specifications:

Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.1"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Second camera:

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

Specifications:

Aperture size: F2.2; Focal Length: 12 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 (Depth information)
5 MP (Macro)

Specifications:

Aperture size: F2.2
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)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features:

Video calling, Video sharing
Hyperlapse, EIS
EIS

Front:

16 MP
32 MP (HDR)
8 MP

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.26 x 2.96 x 0.33 inches (159 x 75.1 x 8.5 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:

6.14 oz (174.0 g)
6.07 oz (172.0 g)
5.04 oz (143.0 g)

Materials:

Back: Plastic
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic

Biometrics:

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

Features:

Soft keys

Keys:

Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Black, Blue
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Just black

Cellular

LTE (FDD):

Bands 1(2100), 3(1800), 5(850), 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)
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 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

UMTS:

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

Data Speed:

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

Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM, eSIM

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Album art cover, Background playback, Dolby Atmos
Dolby Atmos
aptX, aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.1

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
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 2.0
Type-C (reversible), USB 3.1

Features:

Mass storage device, Charging
Charging, OTG
Charging

Location:

GPS, A-GPS, Glonass, BeiDou
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:

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

Hearing aid compatible:

M3, T4

Phone features

Notifications:

Haptic feedback, Music ringtones, Vibration

Other features:

Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval:

Date approved:

Feb 13, 2019
Nov 28, 2019
Jun 25, 2020

FCC ID value:

A3LSMM305F link
A3LSMA515FN link
A4RG025J link

Measured SAR:

Head:

0.28 W/kg
0.89 W/kg
1.18 W/kg

Body:

0.39 W/kg
1.18 W/kg
1.19 W/kg

Simultaneous Transmission:

1.24 W/kg
1.56 W/kg
1.59 W/kg

Wireless Router:

0.93 W/kg
1.12 W/kg
1.00 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 400
$ 349

User Manual:

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

In The Box:

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:

Feb 27, 2019
Dec 12, 2019
Aug 03, 2020
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