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Samsung Galaxy S9 vs Google Pixel 4a vs Google Pixel 3a

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

Comparison mode:

Display

Size:

5.8 inches
5.8 inches
5.6 inches

Resolution:

2960 x 1440 pixels, 18.5:9 ratio, 568 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI
2220 x 1080 pixels, 18.5:9 ratio, 444 PPI

Technology:

Super AMOLED
OLED
OLED

Refresh rate:

60Hz

Screen-to-body:

84.36 %
82.53 %
73.93 %

Features:

HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Dragontrail), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 845 SDM845
Qualcomm Snapdragon 730G SM7150-AA
Qualcomm Snapdragon 670 SDM670

Processor:

Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
Octa-core, 2000 MHz, Kryo 360, 64-bit, 10 nm

GPU:

Adreno 630
Adreno 618
Adreno 615

RAM:

4GB LPDDR4
6GB LPDDR4
4GB LPDDR4

Internal storage:

64GB
128GB (UFS 2.1), not expandable
64GB (eMMC), not expandable

Storage expansion:

microSDXC up to 400 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI
Android (11, 10)
Android (11, 10, 9.0 Pie)

Battery

Capacity:

3000 mAh
3140 mAh
3000 mAh

Type:

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

Battery life test results:

Charging:

Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
USB Power Delivery
USB Power Delivery

Max charge speed:

Wired: 18.0W

Camera

Rear:

Single camera
Single camera
Single camera

Main camera:

12 MP (OIS, PDAF)
12.2 MP (OIS, PDAF)
12.2 MP (OIS, PDAF)

Specifications:

Aperture size: F1.5/F2.4; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.8; Focal length: 28 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Video recording:

3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 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:

HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
EIS
EIS

Front:

8 MP (Autofocus, HDR)
8 MP
8 MP

Video capture:

2560x1440 (QHD) (30 fps)
1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

5.81 x 2.70 x 0.33 inches (147.7 x 68.7 x 8.5 mm)
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)
5.96 x 2.76 x 0.32 inches (151.3 x 70.1 x 8.2 mm)

Weight:

5.75 oz (163.0 g)
5.04 oz (143.0 g)
5.19 oz (147.0 g)

Materials:

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

Resistance:

Water, Dust; IP68

Biometrics:

Iris scanner, 2D Face unlock, Fingerprint (touch)
Fingerprint (touch)
Fingerprint (touch)

Features:

Notification light

Keys:

Left: Volume control, Other; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue
Just black
Black, Purple, 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), 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)
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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3)

LTE (TDD):

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

UMTS:

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

Data Speed:

LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
LTE-A Cat 11 (600/75 Mbit/s), 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

SIM type:

Nano SIM
Nano SIM, eSIM
Nano SIM

HD Voice:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Multiple speakers
Earpiece, Multiple speakers
Earpiece, Multiple speakers

Features:

32-Bit DAC, aptX-HD
aptX, aptX-HD
aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.1
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; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 3.1
Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0

Features:

Charging, OTG, Video out
Charging
Charging, Mass storage device

Location:

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

Sensors:

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

Other:

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

Hearing aid compatible:

M3, T4
M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jan 11, 2018
Jun 25, 2020
Feb 25, 2019

FCC ID value:

A3LSMG960U
A4RG025J
A4RG020G

Measured SAR:

Head:

0.35 W/kg
1.18 W/kg
1.15 W/kg

Body:

0.96 W/kg
1.19 W/kg
1.13 W/kg

Simultaneous Transmission:

1.59 W/kg
1.59 W/kg
1.59 W/kg

Wireless Router:

0.95 W/kg
1.00 W/kg
1.19 W/kg

Buyers information

Price:

$ 720
$ 349
$ 399

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
18W USB-C power adapter, 1M USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool

Availability

Officially announced:

Feb 25, 2018
Aug 03, 2020
May 07, 2019
FCC OKs Cingular\'s purchase of AT&T Wireless