Motorola Moto Z4 vs Samsung Galaxy A21s 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
8.0
Motorola Moto Z4
7.5
Samsung Galaxy A21s
Motorola Moto Z4 Samsung Galaxy A21s
Released · Jun 06, 2019
Released · Jun 19, 2020
6.4-inch · 2340x1080px
6.5-inch · 1600x720px
Single camera
Quad camera
4GB · 128GB
3GB · 32GB
3600 mAh
5000 mAh

Availability

Officially announced
May 30, 2019 May 15, 2020
Prices (MSRP)
$500 €240

Design

Dimensions
6.22 x 2.95 x 0.29 inches
158 x 75 x 7.35 mm 		6.44 x 2.96 x 0.35 inches
163.7 x 75.3 x 8.9 mm
Weight
5.82 oz / 165.0 g 6.77 oz / 192.0 g
Materials
Back: Glass (Corning Gorilla Glass 5)
Frame: Aluminum
Resistance
Splash
Biometrics
Optical in-screen fingerprint 2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Gray, White Black, White, Blue, Red

Display

Size
6.4-inch, 84.67% screen-to-body 6.5-inch, 82.94% screen-to-body
Type
OLED TFT
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI 1600x720px, 20:9 ratio, 270 PPI
Protection
Corning Gorilla Glass 3
PhoneArena Display Test
Bright Max (20% APL)
Untested Untested
Bright Min
4 (Poor) 4.6 (Poor)
Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 675 (11 nm) Samsung Exynos 850
Processor
Octa-core
2000 MHz
Kryo 460 		Octa-core
8x2.0GHz Cortex-A55
GPU
Adreno 612 Mali-G76
Memory
4GB (LPDDR4)/128GB 3GB (LPDDR4)/32GB (eMMC 5.1)
4GB/64GB
6GB/64GB
Storage expansion
microSDXC up to 512 GB microSDXC up to 512 GB
OS
Android (10, 9.0 Pie) Android (10)

Battery

Type
3600 mAh, Li - Ion 5000 mAh, Li - Polymer
Charging
Motorola TurboPowe Fast charging
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Battery Life Estimate
Untested
Browsing
Untested
Video
11h 9min
Gaming
7h 48min
Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera Quad camera
Main camera
48 MP (OIS, Laser and PDAF)
Aperture size: F1.7
Sensor size: 1/2"
Pixel size: 0.8 μm 		48 MP (PDAF)
Aperture size: F2.0
Focal length: 26 mm
Sensor size: 1/2"
Pixel size: 0.8 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
4K UHD (30 fps), 1080p (120 fps)
Time-lapse video, Video calling, Video sharing 		1080p (30 fps)
Front
25 MP
Video capture: 1080p 		13 MP
Video capture: 1080p

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac 		a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
USB
Type-C, USB 3.1 Type-C, USB 2.0
Sensors
Accelerometer, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor Accelerometer, Gyroscope, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, VoIP, Tethering, Computer sync, OTA sync NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 66, 71 1, 2, 3, 5, 7, 8, 20, 28
4G (TDD) Bands
38, 40, 41 38, 40, 41
3G Bands
5, 8, 4, 2, 1 1, 2, 5, 8
Data Speed
LTE-A, HSPA, HSUPA LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes
SIM type
Nano SIM Nano SIM

Alternative variants

with 4GB RAM
Memory 4GB/64GB
with 6GB RAM
Memory 6GB/64GB
FCC OKs Cingular\'s purchase of AT&T Wireless