Google Pixel 3a vs Samsung Galaxy A21 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

9.0
Google Pixel 3a	Samsung Galaxy A21
Released · May 07, 2019	Released · Jun 29, 2020
5.6-inch · 2220x1080px	6.5-inch · 1600x720px
Single camera	Quad camera
4GB · 64GB	3GB · 32GB
3000 mAh	4000 mAh

Design

Dimensions
5.96 x 2.76 x 0.32 inches 151.3 x 70.1 x 8.2 mm	6.61 x 3.02 x 0.32 inches 167.8 x 76.7 x 8.1 mm
Weight
5.19 oz (147.0 g)	6.81 oz (193.0 g)
Materials
Back: Plastic	Back: Plastic Frame: Plastic
Biometrics
Fingerprint (touch)	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Purple, White	Black

Display

Size
5.6-inch	6.5-inch
Resolution
2220x1080px, 18.5:9 ratio, 444 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
OLED	IPS LCD
Refresh rate
	60Hz
Screen-to-body
73.93 %	79.20 %
Features
Scratch-resistant glass (Dragontrail), Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 670 SDM670 (10 nm)	Mediatek Helio P35 MT6765 (12 nm)
Processor
Octa-core 2000 MHz Kryo 360	Octa-core 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53
GPU
Adreno 615	PowerVR GE8320
RAM
4GB (LPDDR4)	3GB (LPDDR4)
Internal storage
64GB (eMMC)	32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion
not expandable	microSDXC up to 512 GB
OS
Android (12, 11, 10, 9.0 Pie)	Android (10), Samsung One UI

Battery

Capacity
3000 mAh	4000 mAh
Type
	Li - Polymer
Charging
USB Power Delivery	Fast charging
Charge speed
	Wired: 15.0W

Battery Life Estimate

Untested

Browsing

9h 48min

Video

6h 30min

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Camera

Rear
Single camera	Quad camera
Main camera
12.2 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 28 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	16 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3.06" Pixel size: 1 μm
Second camera
	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
	2 MP (Macro) Aperture size: F2.4
Fourth camera
	2 MP (Depth information) Aperture size: F2.4
Flash
Dual LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps) EIS	1920x1080 (Full HD) (30 fps)
Front
8 MP, Video capture: 1920x1080 (Full HD)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
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, USB 2.0	Type-C, USB 2.0
Hearing aid compatible
M3/T3	M4/T3
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Barometer	Accelerometer, Gyroscope, Compass
Other
NFC, VoIP, Tethering, Computer sync, OTA sync	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Loudspeaker
Features
aptX-HD
Screen mirroring
Wireless screen share	Wireless screen share
Radio
	FM
Additional microphone(s)
Noise cancellation

Cellular

4G (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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 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), 17(700 b), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Cat 11 (600/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM	Nano SIM
HD Voice
Yes	Yes

Regulatory Approval

FCC approval
Date approved: Feb 25, 2019 FCC ID value: A4RG020G	Date approved: Apr 17, 2020 FCC ID value: ZCASMA215U
Measured SAR
Head: 1.15 W/kg Body: 1.13 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.19 W/kg	Head: 0.42 W/kg Body: 1.27 W/kg Simultaneous Transmission: 1.27 W/kg Wireless Router: 1.27 W/kg

Buyers information

MSRP
$ 399	$ 250
In The Box
18W USB-C power adapter, 1M USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool	This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced
May 07, 2019	Apr 08, 2020

Alternative variants


4G (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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

for Verizon


4G (FDD)	Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)	Bands 38(2600), 40(2300), 41(2600+)
3G	Bands 5(850), 8(900), 2(1900), 1(2100)

for Sprint


4G (FDD)	Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD)	Bands 41(2600+)

Links

Full specifications
Google Pixel 3a Specs	Samsung Galaxy A21 Specs
PhoneArena Review
Google Pixel 3a Review
User Reviews
Google Pixel 3a User Reviews	Samsung Galaxy A21 User Reviews