Google Pixel 4a 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.

9.1
Google Pixel 4a
Google Pixel 4a Samsung Galaxy A21
Released · Aug 20, 2020
Released · Jun 29, 2020
5.8-inch · 2340x1080px
6.5-inch · 1600x720px
Single camera
Quad camera
6GB · 128GB
3GB · 32GB
3140 mAh
4000 mAh
Check prices

Design

Dimensions
5.67 x 2.73 x 0.32 inches
144 x 69.4 x 8.2 mm
6.61 x 3.02 x 0.32 inches
167.8 x 76.7 x 8.1 mm
Weight
5.04 oz (143.0 g) 6.81 oz (193.0 g)
Materials
Back: Plastic
Frame: Plastic
Back: Plastic
Frame: Plastic
Biometrics
Fingerprint (touch) Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Just black Black

Display

Size
5.8-inch 6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 444 PPI 1600x720px, 20:9 ratio, 270 PPI
Technology
OLED IPS LCD
Refresh rate
60Hz 60Hz
Screen-to-body
82.53 % 79.20 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 730G SM7150-AA (8 nm) Mediatek Helio P35 MT6765 (12 nm)
Processor
Octa-core
2200 MHz
Kryo 470
Octa-core
4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53
GPU
Adreno 618 PowerVR GE8320
RAM
6GB (LPDDR4) 3GB (LPDDR4)
Internal storage
128GB (UFS 2.1) 32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion
not expandable microSDXC up to 512 GB
OS
Android (12, 11, 10) Android (10), Samsung One UI

Battery

Capacity
3140 mAh 4000 mAh
Type
Li - Polymer Li - Polymer
Charging
USB Power Delivery Fast charging
Charge speed
Wired: 18.0W Wired: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
4h 15min
Browsing
9h 27min
Video
6h 48min
Gaming
4h 51min
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: F1.7
Focal length: 27 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
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
5.1 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 3.1 Type-C, USB 2.0
Hearing aid compatible
M3/T4 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 NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Loudspeaker
Features
aptX, 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), 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), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 39(1900+), 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
Dual SIM
Yes
SIM type
Nano SIM, eSIM Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: Jun 25, 2020
FCC ID value: A4RG025J
Date approved: Apr 17, 2020
FCC ID value: ZCASMA215U
Measured SAR
Head: 1.18 W/kg
Body: 1.19 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.00 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
$ 349 $ 250
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 This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced
Aug 03, 2020 Apr 08, 2020

Alternative variants

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+)
FCC OKs Cingular\'s purchase of AT&T Wireless