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Google Pixel 4a 5G 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.

Comparison mode:
Specs Size
Differences only
9.1
Google Pixel 4a 5G
Samsung Galaxy A21
Google Pixel 4a 5G Samsung Galaxy A21
Released · Nov 19, 2020
Released · Jun 29, 2020
6.2-inch
6.5-inch
Dual camera
Quad camera
6GB · 128GB
3GB · 32GB
3885 mAh
4000 mAh
Check prices

Design

Dimensions
6.06 x 2.91 x 0.32 inches
153.9 x 74.0 x 8.2 mm 		6.61 x 3.02 x 0.32 inches
167.8 x 76.7 x 8.1 mm
Weight
5.93 oz (168.0 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
Just black, Clearly white Black

Display

Size
6.2-inch 6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 416 PPI 1600x720px, 20:9 ratio, 270 PPI
Technology
OLED IPS LCD
Refresh rate
60Hz 60Hz
Screen-to-body
82.94 % 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 765G SM7250-AB (7 nm) Mediatek Helio P35 MT6765 (12 nm)
Processor
Octa-core
2400 MHz
Kryo 475 		Octa-core
4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53
GPU
Adreno 620 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) Android (10), Samsung One UI

Battery

Capacity
3885 mAh 4000 mAh
Type
Li - Polymer
Charging
USB Power Delivery Fast charging
Charge speed
Wired: 18.0W Wired: 15.0W

Camera

Rear
Dual camera Quad camera
Main camera
12.2 MP (OIS, PDAF)
Aperture size: F1.7
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
16 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1 μm 		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) (60 fps), 1920x1080 (Full HD) (240 fps)
OIS, Time-lapse video, EIS 		1920x1080 (Full HD) (30 fps)
Front
8 MP (Dual-Camera, Time-of-Flight (ToF)), 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 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

5G
Bands n1, n2, n5, n12, n25, n28, n41, n66, n71, n78, Sub-6
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), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 32(1500 L-band), 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+), 42(3500), 46, 48(3600) 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, 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 Yes

Regulatory Approval

FCC approval
Date approved: Sep 01, 2020
FCC ID value: A4RG025E 		Date approved: Apr 17, 2020
FCC ID value: ZCASMA215U
Measured SAR
Head: 1.20 W/kg
Body: 1.20 W/kg
Simultaneous Transmission: 1.57 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
$ 500 $ 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
Sep 30, 2020 Apr 08, 2020

Alternative variants

for Verizon
Weight 6.03 oz (171.0 g)
5G Bands n2, n5, n12, n25, n66, n71, n260, n261, Sub-6, mmWave
MSRP $ 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+)
FCC OKs Cingular\'s purchase of AT&T Wireless