Motorola Moto Z4 vs Motorola Moto G Stylus vs Samsung Galaxy A21

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

Display

Size:

6.4 inches
6.4 inches
6.5 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2300 x 1080 pixels, 19.17:9 ratio, 397 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

OLED
IPS LCD
IPS LCD

Screen-to-body:

84.67 %
84.75 %
79.20 %

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 675
Qualcomm Snapdragon 665 SM6125
Mediatek Helio P35

Processor:

Octa-core, 2000 MHz, Kryo 460, 64-bit, 11 nm
Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU:

Adreno 612
Adreno 610
PowerVR GE8320

RAM:

4GB LPDDR4
4GB
3GB LPDDR4

Internal storage:

128GB
128GB
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10, 9.0 Pie)
Android (10)
Android (10), Samsung One UI

Battery

Capacity:

3600 mAh
4000 mAh
4000 mAh

Type:

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

Battery life test results:

Charging:

Motorola TurboPower
Motorola TurboPower
Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Single camera
Quad camera
Quad camera

Main camera:

48 MP (OIS, Laser and PDAF)
48 MP (Laser and PDAF)
16 MP (PDAF)

Specifications:

Aperture size: F1.7; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm

Second camera:

16 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Pixel size: 2 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

2 MP (Macro)
2 MP (Macro)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.75 μm
Aperture size: F2.4

Fourth camera:

ToF 3D depth sensing
2 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

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

Features:

Time-lapse video, Video calling, Video sharing
Time-lapse video, Hyperlapse, EIS

Front:

25 MP
16 MP (EIS, HDR)
13 MP

Video capture:

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

Design

Dimensions:

6.22 x 2.95 x 0.29 inches (158 x 75 x 7.35 mm)
6.24 x 2.98 x 0.36 inches (158.55 x 75.8 x 9.2 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight:

5.82 oz (165.0 g)
6.77 oz (192.0 g)
6.81 oz (193.0 g)

Materials:

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

Resistance:

Splash
Splash

Biometrics:

In-screen fingerprint
Fingerprint (touch)
Fingerprint (touch)

Features:

Stylus

Keys:

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

Colors:

Gray, White
Mystic indigo
Black

Cellular

LTE (FDD):

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 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), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 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)

LTE (TDD):

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

UMTS:

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed:

LTE-A, HSPA, HSUPA
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

SIM type:

Nano SIM
Nano SIM
Nano SIM

HD Voice:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features:

Album art cover, Background playback
Dolby Mobile

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.0

Wi-Fi:

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

USB:

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

Features:

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

Location:

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

Sensors:

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

Other:

NFC, VoIP, Tethering, Computer sync, OTA sync
NFC

Hearing aid compatible:

M4, T3

Regulatory Approval

FCC approval:

Date approved:

Apr 17, 2020

FCC ID value:

ZCASMA215U link

Measured SAR:

Head:

0.42 W/kg

Body:

1.27 W/kg

Simultaneous Transmission:

1.27 W/kg

Wireless Router:

1.27 W/kg

Buyers information

Price:

$ 500
$ 300
$ 250

In The Box:

TurboPower charger, USB-C cable, guides
Charger, USB Type-C cable, guides, SIM tool
This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

May 30, 2019
Feb 07, 2020
Apr 08, 2020
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
FCC OKs Cingular\'s purchase of AT&T Wireless