Samsung Galaxy A21s (SM-A217F) vs Asus Zenfone 5Z (ZS621KL 64GB)

Side by side comparison between Samsung Galaxy A21s vs Asus Zenfone 5Z phones, differences, pros, cons with full specifications. What's the better?

7/15/2020 12:38 AM, updated: 9/28/2020 10:56 PM

Compare Asus Zenfone 5Z XSamsung Galaxy A21s (SM-A217F)05Points

Specifications Compare Models Pictures

6.5"
PLS

720x1600

48
MP

13mp

3GB
RAM

64bit Octa

5000
mAh

(Non removable)

19PointsAsus Zenfone 5Z (ZS621KL 64GB)Compare Samsung Galaxy A21s X

Specifications Compare Models

6.2"
IPS

1080x2246

12
MP

8mp

6GB
RAM

64bit Octa

3300
mAh

(Non removable)

What's the better phone? Asus Zenfone 5Z (ZS621KL 64GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

5 Advantages Samsung Galaxy A21s (SM-A217F)	vs	19 Advantages Asus Zenfone 5Z (ZS621KL 64GB)
+6.5"5% Larger screen	vs	6.2"
+(quad camera) 48MP + 8MP + 2MP + 2MP2 times Higher resolution main camera	vs	(dual camera) 12MP + 8MP
+1/2" inches28% The larger sensor camera lets you take photos with better depth.	vs	1/2.55" inches
+(front) 13MP60% Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+5000 mAh52% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3300 mAh
3GB LPDDR4X	vs	+6GB LPDDR4X100% More RAM memory. Typically more responsive and better for multitasking.
32GB (19GB available)	vs	+64GB (51GB available)168% More internal storage for applications and files
eMMC 5.1	vs	+UFS 2.1Advantage Fastest write and read storage.
192 grams (6.72 ounces)	vs	+165 grams (5.78 ounces)16% Lighter
8.9 millimeters (0.35 inches)	vs	+7.9 millimeters (0.31 inches)13% Thinner
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
TFT PLS	vs	+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid
720x1600 pixels	vs	+1080x2246 pixels111% Higher resolution screen
270 PPI	vs	+402 PPI49% Crisper display of text, images and videos because it has more pixels per inch (ppi)
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
EIS: Digital stabilization	vs	+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Full HD (1920x1080)	vs	+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera
(4G+ LTE-A) 300 Mbps	vs	+(4G+ LTE-A) 800 Mbps167% Faster for surfing the internet and download files
Not supported	vs	+Ambient Light sensorAdvantage Sensors help you use the device
15W	vs	+18W20% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage It's more advantageous to have more than one phone operator in the same device
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
Not supported	vs	+Gorilla GlassAdvantage Protection against scratches on the screen lets you carry your phone with your keys

30 Common items in both devices

2Ghz 64bit Octa-Core

Until 512GB microSD, microSDXC / Until 1TB microSD, microSDXC

60Hz

16 million

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

+23 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

Physical features	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Model	Galaxy A21s (SM-A217F)	Zenfone 5Z (ZS621KL 64GB)
Other model names	Galaxy A21s SM-A217F Single-Sim (32GB + 3GB RAM)	Asus Zenfone 5z 6GB RAM (ZS621KL), ASUS_Z01RD
Country or region available	South Africa, Australia, New Zealand	India
Brand	Samsung	Asus
Release date	June, 2020	June, 2018
Depth	8.9 millimeters (0.35 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	75.3 x 163.7 millimeters (2.96 x 6.44 in)	75.65 x 153 millimeters (2.98 x 6.02 in)
Weight	192 grams (6.72 ounces)	165 grams (5.78 ounces)
Qwerty physical keyboard	Not supported	Not supported
Antenna	Internal antenna	Internal antenna
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
System (OS)	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Operating system	Android 10	Android 8.0 Oreo
Firmware update	feature not registered	Android 10
Hardware	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Chipset	64bit - Samsung Exynos 850 Octa (8nm)	64bit - Qualcomm Snapdragon 845 MSM8998 (10nm)
CPU processor	Octa-Core, 2 processors: 2Ghz Quad-Core ARM Cortex-A55 2Ghz Quad-Core ARM Cortex-A55	Octa-Core, 2 processors: 2.7Ghz Quad-Core Kryo 385 Gold 1.7Ghz Quad-Core Kryo 385 Silver
GPU graphical controller	ARM Mali-G52 MP1	Qualcomm Adreno 630 710Mhz
RAM memory	3GB LPDDR4X	6GB LPDDR4X
Internal storage	32GB (19GB available) eMMC 5.1	64GB (51GB available) UFS 2.1
External storage	Until 512GB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
Display	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Display type	TFT PLS	TFT IPS LCD
Screen size	6.5" inches	6.2" inches
Screen-to-body ratio	~82.8% (screen-to-body ratio)	~83.7% (screen-to-body ratio)
Display resolution	720x1600 pixels (20:9)	1080x2246 pixels (18.7:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	270 PPI	402 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass
Display features	60Hz	60Hz, 550 nits
Mobile networks	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum download/upload	300/150 Mbps	800/100 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band detailsCollapse details
GSM Mhz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	UMTS 800/850/900
Primary 4G network	LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)	LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
Calling	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Speakerphone	Supported	Supported
Video calling	Supported	Supported
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder
Camera	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Back camera (main camera)	(quad camera) 48 megapixels 8MP ultrawidef/2.21/4"1.12µm123º 2MP macrof/2.4 2MP depthf/2.4	(dual camera) 12 megapixels 8MP ultrawidef/2.012mm1/4"1.12µmFF
Main camera resolution	8000x6000 pixels	4000x3000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	26mm lens	24mm lens
Sensor size	1/2" inches	1/2.55" inches
Pixel size	0.8µm pixel	1.4µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS (4-axis): Optical stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
2ª camera	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Front camera (secondary)	13 megapixels	8 megapixels
Front camera resolution	4128x3096 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	24mm lens
Sensor size	1/3.1" inches	1/4" inches
Pixel size	1.12µm pixel	1.12µm pixel
Multimedia	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, OGG, eAAC+, FLAC
Connectivity	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
USB	USB 2.0 Type-C reversible connector	USB 2.0 Type-C, USB OTG On-The-Go
TV output	Not supported	Not supported
Audio output	3.5mm jack	3.5mm jack
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO	802.11 a/b/g/n/ac (2.4Ghz, 5Ghz)
DLNA	Not supported	Not supported
NFC	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
Infrared port	Not supported	Not supported
Other functions	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Active noise cancellation	Supported	Supported
Vibrating alert	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Sensors	Accelerometer Proximity sensor Compass Gyroscope Face unlock Fingerprint sensor (rear-mounted)	Accelerometer Proximity sensor Compass Ambient Light sensor Gyroscope Face unlock Fingerprint sensor (rear-mounted)
Other features	- Colors: Black, White, Blue, Red - One UI 2.0 - WiFi direct, hotspot	- Colors: Midnight Blue, Meteor Silver - 2.5D curved glass screen - 95% DCI-P3 coverage - Supports glove touch - ASUS ZenUI 5.0 - 24-bit/192kHz audio - DTS sound (only headphones) - WiFi direct, hotspot
Power supply	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
Battery	LiPo: Li-Ion polymer (Non removable)	Li-Ion: Lithium-Ion (Non removable)
Battery capacity	5000 mAh	3300 mAh
Charger, watts	15W (9V/1.67A) Fast battery charging	18W (9V/2A) Fast battery charging
Talk time autonomy	feature not registered	1500 minutes \| 25 hours \| 1 days
Standby	feature not registered	feature not registered
Radiation rate	Samsung Galaxy A21s (SM-A217F)	Asus Zenfone 5Z (ZS621KL 64GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	1.04W/kg (head) \| 0.37W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.422W/kg (head) \| 1.544W/kg (body)	1.2W/kg (head) \| 1.477W/kg (body)