Samsung Galaxy M21 vs Google Pixel 4a Specs Comparison

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

Display

Size:

6.4 inches
5.8 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI

Technology:

Super AMOLED
OLED

Refresh rate:

60Hz

Screen-to-body:

84.11 %
82.53 %

Peak brightness:

420 cd/m2 (nit)

Features:

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

Hardware

System chip:

Exynos 9611 (10 nm)
Qualcomm Snapdragon 730G SM7150-AA (8 nm)

Processor:

Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2200 MHz, Kryo 470, 64-bit

GPU:

Mali-G72 MP3
Adreno 618

RAM:

4GB LPDDR4
6GB LPDDR4

Internal storage:

64GB, available to use: 49 GB
128GB (UFS 2.1), not expandable

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone
Smartphone

OS:

Android (11, 10), Samsung One UI
Android (12, 11, 10)

Battery

Capacity:

6000 mAh
3140 mAh

Type:

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

Battery life test results:

Charging:

Fast charging
USB Power Delivery

Max charge speed:

Wired: 18.0W

Camera

Rear:

Triple camera
Single camera

Main camera:

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

Specifications:

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:

8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

5 MP (Depth information)

Specifications:

Aperture size: F2.2

Flash:

LED
LED

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features:

EIS
EIS

Front:

20 MP (HDR)
8 MP

Video capture:

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

Design

Dimensions:

6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)

Weight:

6.63 oz (188.0 g)
5.04 oz (143.0 g)

Materials:

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

Biometrics:

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

Keys:

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

Colors:

Midnight blue, Raven black
Just black

Cellular

4G (FDD):

Bands 1(2100), 3(1800), 5(850), 7(2600), 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), 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)

4G (TDD):

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

3G:

Bands 1(2100), 2(1900), 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 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, eSIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Dolby Atmos
aptX, aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.1

Wi-Fi:

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 3.1

Features:

Charging
Charging

Location:

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

Sensors:

Accelerometer, Gyroscope
Accelerometer, Gyroscope, Compass, Barometer

Other:

NFC

Hearing aid compatible:

M3, T4

Regulatory Approval

FCC approval:

Date approved:

Jun 25, 2020

FCC ID value:

A4RG025J

Measured SAR:

Head:

1.18 W/kg

Body:

1.19 W/kg

Simultaneous Transmission:

1.59 W/kg

Wireless Router:

1.00 W/kg

Buyers information

Price:

$ 349

In The Box:

This is the official Samsu​ng Galaxy M21 User Guide in English provided from the manufacturer.
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:

Mar 18, 2020
Aug 03, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless