Asus Zenfone 5Z (ZS621KL 64GB) vs Asus Zenfone 3 (5.5 ZE552KL 64GB)

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Side by side comparison between Asus Zenfone 5Z vs Asus Zenfone 3 phones, differences, pros, cons and full specifications. What's the better?

8/26/2018 9:15 AM, updated: 3/13/2023 9:26 AM

Compare Asus Zenfone 3 X Asus Zenfone 5Z (ZS621KL 64GB) 16Points

Specifications Compare Models Pictures

6.2"
IPS

1080x2246

12
MP

8mp

6GB
RAM

Octa-core

3300
mAh

(Non removable)

02Points Asus Zenfone 3 (5.5 ZE552KL 64GB) Compare Asus Zenfone 5Z X

Specifications Compare Models Pictures

5.5"
IPS+

1080x1920

16
MP

8mp

4GB
RAM

Octa-core

3000
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!

16 Advantages Asus Zenfone 5Z (ZS621KL 64GB)	vs	2 Advantages Asus Zenfone 3 (5.5 ZE552KL 64GB)
+2.7GHz 64bit Octa-core21% More powerful processor, you can open your applications faster	vs	2GHz 64bit Octa-core (14nm)
+6GB LPDDR4X50% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR3
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC 5.1
+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards	vs	Until 256GB microSD, microSDXC
+1080x2246 pixels17% Higher resolution screen	vs	1080x1920 pixels
+402 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	401 PPI
+6.2"13% Larger screen	vs	5.5"
+(dual camera) 12MP + 8MP26% Higher resolution main camera	vs	(back) 16MP
+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.0 (aperture)
+Android 10Advantage Android 10 is newer and safer	vs	Android 8.0 Oreo
+(4G LTE-A) 800 Mbps167% Faster for surfing the internet and download files	vs	(4G LTE-A) 300 Mbps
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+3300 mAh10% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+18W80% 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.	vs	10W
+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster	vs	4.2 + A2DP
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
165 grams (5.78 ounces)	vs	+155 grams (5.43 ounces)6% Lighter
7.9 millimeters (0.31 inches)	vs	+7.7 millimeters (0.3 inches)3% Thinner

31 Common items in both devices

64GB (51GB available) / 64GB (55GB available)

Aluminum frame, glass front/back / Aluminum body, glass front, plastic back

TFT IPS LCD / TFT Super IPS+

60Hz

16 million

Dual-LED flash

Only digital zoom

+24 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

📱 Model features
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Change model		Choose the model
Model	Zenfone 5Z (ZS621KL 64GB)	Zenfone 3 (5.5 ZE552KL 64GB)
Other model names	Asus Zenfone 5z 6GB RAM (ZS621KL), ASUS_Z01RD	Zenfone 3 ZE552KL 4GB/64GB 5.5" Dual-SIM, Asus Libra
Country or region available	India	(Europe), (Global, International), Brazil, Canada, China, USA, Hong Kong, India, Indonesia, Japan, Taiwan
Brand	Asus	Asus
Release date	6/1/2018	7/12/2016
Depth	7.9 millimeters (0.31 inches)	7.7 millimeters (0.3 inches)
Size (width x height)	75.65 x 153 millimeters (2.98 x 6.02 in)	77.38 x 152.59 millimeters (3.05 x 6.01 in)
Weight	165 grams (5.78 ounces)	155 grams (5.43 ounces)
Build, materials	Aluminum frame, glass front/back	Aluminum body, glass front, plastic back
Protection against water and others	Not supported	Not supported
📲 Display
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Display type	TFT IPS LCD	TFT Super IPS+
Screen size	6.2" inches	5.5" inches
Screen-to-body ratio	~83.7% (screen-to-body ratio)	~70.6% (screen-to-body ratio)
Display resolution	1080x2246 pixels (18.7:9)	1080x1920 pixels (16:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	402 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass	Gorilla Glass 3
Refresh rate	60Hz	60Hz
Display features	550nits[typ]	2.5D glass
🤖 Operating System
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
System version	Android 8.0 Oreo	Android 6.0.1 Marshmallow
Firmware update	Android 10	Android 8.0 Oreo
User Interface	feature not registered	ZenUI 3.0
⚙️ Processor
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Chipset	64bit: Qualcomm Snapdragon 845 MSM8998 (10nm)	64bit: Qualcomm Snapdragon 625 (MSM8953) (14nm)
CPU	Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	Qualcomm Adreno 630 710Mhz	Qualcomm Adreno 506 (650MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
RAM memory	6GB LPDDR4X	4GB LPDDR3
Internal storage	64GB (51GB available) UFS 2.1	64GB (55GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF)
Maximum Download / Upload	800/100 Mbps	300/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse 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 800/850/900	Global: UMTS 850/900/1900/2100 Taiwan: UMTS 800/850/900/1900/2100 India: UMTS 850/900/2100
Primary 4G network	LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41)	LTE Cat6 Global: LTE (1, 2, 3, 5, 7, 8, 20) Taiwan: LTE (1, 2, 3, 5, 7, 8, 18, 19, 26, 28) TD-LTE (38, 39, 40, 41) India: LTE (1, 3, 5, 8) TD-LTE (40) Brazil/USA: LTE (1, 2, 3, 4, 5, 7, 8, 17, 28)
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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Global: UMTS 850/900/1900/2100 Taiwan: UMTS 800/850/900/1900/2100 India: UMTS 850/900/2100
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
📷 Camera
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Back camera (main camera)	(dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF	16 megapixels
Main camera resolution	4000x3000 pixels	4608x3456 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	Dual-LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/2.0 (aperture)
Focal length	24mm lens	feature not registered
Sensor size	1/2.55" inches	feature not registered
Pixel size	1.4µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS (4-axis): Optical 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
Camera extras	feature not registered	4K@30fps 1080p@30/60fps
📸 Front camera
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Front camera (secondary)	8 megapixels	8 megapixels
Front camera resolution	3264x2448 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	24mm lens	feature not registered
Sensor size	1/4" inches	feature not registered
Pixel size	1.12µm pixel	feature not registered
🔉 Sound and multimedia
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Loudspeaker	Supported	Mono sound (not stereo) 24-bit/192kHz
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263	MP4, H.264, H.263
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, eAAC+, FLAC
🔌 Connectivity
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	4.2 + A2DP
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3300 mAh	3000 mAh
Charger, watts	18W (9V/2A) Wired fast charging	10W (5V/2A) Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	25 hours (1 days)	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• 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)	• Colors: Sapphire Black, Moonlight White, Shimmer Gold
☢️ Radiation rate
	Asus Zenfone 5Z (ZS621KL 64GB)	Asus Zenfone 3 (5.5 ZE552KL 64GB)
SAR 1.6W/kg (USA, Mexico, etc.)	1.04W/kg (head), 0.37W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	1.2W/kg (head), 1.477W/kg (body)	feature not registered