Samsung 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.

	7.5
Samsung Z4	Samsung Galaxy A21s
Released · Jun 01, 2017	Released · Jun 19, 2020
4.5-inch · 800x480px	6.5-inch · 1600x720px
Single camera	Quad camera
1GB · 8GB	3GB · 32GB
2050 mAh	5000 mAh

Availability

Officially announced
May 12, 2017	May 15, 2020
Prices (MSRP)
	€240

Design

Dimensions
5.23 x 2.72 x 0.41 inches 132.9 x 69.2 x 10.3 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
5.04 oz (143.0 g)	6.77 oz (192.0 g)
Biometrics
	2D Face unlock, Fingerprint (touch)
Features
Touch sensitive control keys
Keys
Left: Volume control; Right: Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Silver	Black, White, Blue, Red

Display

Size
4.5-inch, 62.80% screen-to-body	6.5-inch, 82.94% screen-to-body
Type
	TFT
Resolution
800x480px, 207 PPI	1600x720px, 20:9 ratio, 270 PPI
Colors
262 144

Hardware

System chip
	Samsung Exynos 850
Processor
Quad-core 1500 MHz	Octa-core 8x2.0GHz Cortex-A55
GPU
Yes	Mali-G76
Memory
1GB/8GB	3GB (LPDDR4)/32GB (eMMC 5.1) 4GB/64GB 6GB/64GB
Storage expansion
microSDXC up to 128 GB	microSDXC up to 512 GB
OS
Tizen (3.0)	Android (10)

Battery

Type
2050 mAh	5000 mAh, Li - Polymer
Charging
	Fast charging

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

11h 9min

Gaming

7h 48min

Camera

Rear
Single camera	Quad camera
Main camera
5 MP (Autofocus, CMOS image sensor) Aperture size: F2.2	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
720p (30 fps) Video sharing	1080p (30 fps)
Front
5 MP (Flash)	13 MP Video capture: 1080p

Connectivity & Features

Bluetooth
4.0	5.0
WLAN
b,g,n Wi-Fi Direct 802.11 b, g, n	a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
microUSB, USB 2.0	Type-C, USB 2.0
Sensors
Accelerometer, Proximity sensor	Accelerometer, Gyroscope, Proximity sensor
Location
GPS, A-GPS, Glonass	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
UMA (Wi-Fi Calling), Computer 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, RDS

Cellular

4G (FDD) Bands
1, 3, 5, 8	1, 2, 3, 5, 7, 8, 20, 28
4G (TDD) Bands
40	38, 40, 41
3G Bands
8, 1	1, 2, 5, 8
Data Speed
LTE Cat 4 (150/50 Mbit/s)	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Micro SIM	Nano SIM
VoLTE
Yes

Phone Features

Notifications
Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Other features
Voice dialing, Voice commands, Voice recording

Alternative variants

with 4GB RAM


Memory	4GB/64GB

with 6GB RAM


Memory	6GB/64GB

Links

Full specifications
Samsung Z4 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
	Samsung Galaxy A21s Review