BlackBerry Key2 (BBF100-2) vs Asus Zenfone 5Z (ZS621KL 256GB)

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Side by side comparison between BlackBerry Key2 vs Asus Zenfone 5Z phones, differences, pros, cons and full specifications. What's the better?

8/26/2018 9:01 AM, updated: 4/5/2021 2:55 AM

Compare Asus Zenfone 5Z X BlackBerry Key2 (BBF100-2) 05Points

Specifications Compare Models Pictures

4.5"
IPS

1080x1620

12
MP

8mp

6GB
RAM

Octa-core

3500
mAh

(Non removable)

13Points Asus Zenfone 5Z (ZS621KL 256GB) Compare BlackBerry Key2 X

Specifications Compare Models Pictures

6.2"
IPS

1080x2246

12
MP

8mp

8GB
RAM

Octa-core

3300
mAh

(Non removable)

What's the better phone? Asus Zenfone 5Z (ZS621KL 256GB)

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 BlackBerry Key2 (BBF100-2)	vs	13 Advantages Asus Zenfone 5Z (ZS621KL 256GB)
+433 PPI8% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	402 PPI
+(dual camera) 12MP + 12MP20% Higher resolution main camera	vs	(dual camera) 12MP + 8MP
+1/2.3" inches11% The larger sensor camera lets you take photos with better depth.	vs	1/2.55" inches
+3500 mAh6% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3300 mAh
+USB 3.1 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.	vs	USB 2.0 Type-C, USB OTG On-The-Go
2.2GHz 64bit Octa-core	vs	+2.7GHz 64bit Octa-core21% More powerful processor, you can open your applications faster
6GB LPDDR4	vs	+8GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.
64GB (52GB available)	vs	+256GB (240GB available)4 times More internal storage for applications and files
Until 256GB microSD, microSDXC	vs	+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards
168 grams (5.88 ounces)	vs	+165 grams (5.78 ounces)2% Lighter
8.5 millimeters (0.33 inches)	vs	+7.9 millimeters (0.31 inches)8% Thinner
1080x1620 pixels	vs	+1080x2246 pixels39% Higher resolution screen
4.5"	vs	+6.2"38% Larger screen
EIS: Digital stabilization	vs	+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
Android 8.1 Oreo	vs	+Android 10Advantage Android 10 is newer and safer
(4G LTE-A) 600 Mbps	vs	+(4G LTE-A) 800 Mbps33% Faster for surfing the internet and download files
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage You can have more mobile carriers/operators on the same device.

34 Common items in both devices

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

TFT IPS LCD

60Hz

16 million

Dual-LED flash

Only digital zoom

PDAF: phase detection autofocus

+27 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
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Change model		Choose the model
Model	Key2 (BBF100-2)	Zenfone 5Z (ZS621KL 256GB)
Other model names	RIM BlackBerry KEYtwo	Asus Zenfone 5z 8GB RAM (ZS621KL), ASUS_Z01RD
Country or region available	(Latin America), Canada, USA	India
Brand	BlackBerry	Asus
Release date	6/1/2018	6/1/2018
Depth	8.5 millimeters (0.33 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	71.8 x 151.4 millimeters (2.83 x 5.96 in)	75.65 x 153 millimeters (2.98 x 6.02 in)
Weight	168 grams (5.88 ounces)	165 grams (5.78 ounces)
Build, materials	Aluminum body, glass front, plastic back	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
📲 Display
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	4.5" inches	6.2" inches
Screen-to-body ratio	~55.5% (screen-to-body ratio)	~83.7% (screen-to-body ratio)
Display resolution	1080x1620 pixels	1080x2246 pixels (18.7:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	433 PPI	402 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 3	Gorilla Glass
Refresh rate	60Hz	60Hz
Display features	Not supported	550nits[typ]
🤖 Operating System
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
System version	Android 8.1 Oreo	Android 8.0 Oreo
Firmware update	feature not registered	Android 10
User Interface	feature not registered	feature not registered
⚙️ Processor
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Chipset	64bit: Qualcomm Snapdragon 660 SDM660 (14nm)	64bit: Qualcomm Snapdragon 845 MSM8998 (10nm)
CPU	Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core)	Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)
GPU graphical controller	Qualcomm Adreno 512 650Mhz	Qualcomm Adreno 630 710Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
RAM memory	6GB LPDDR4	8GB LPDDR4X
Internal storage	64GB (52GB available)	256GB (240GB available) UFS 2.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
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	600/75 Mbps	800/100 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 850/900/1700/1900/2100	UMTS 800/850/900
Primary 4G network	LTE Cat11 (Bands 1,2,3,4,5,7,8,12,13,14,17,20,28,29,30,66) TD-LTE (Bands 38,39,40,41)	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
📷 Camera
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Back camera (main camera)	(dual camera) 12 megapixels 12MP f/2.61.0µm	(dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF
Main camera resolution	4000x3000 pixels	4000x3000 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/1.8 (aperture)
Focal length	feature not registered	24mm (lens)
Sensor size	1/2.3" inches	1/2.55" inches
Pixel size	1.55µm 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
Camera extras	feature not registered	feature not registered
📸 Front camera
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
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	feature not registered	24mm (lens)
Sensor size	feature not registered	1/4" inches
Pixel size	1.12µm pixel	1.12µm pixel
🔉 Sound and multimedia
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.265, H.264, H.263
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, OGG, eAAC+, FLAC
🔌 Connectivity
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
USB	USB 3.1 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	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO 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	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	3500 mAh	3300 mAh
Charger, watts	Wired charging Quick Charge 3	18W (9V/2A) Wired fast charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	25 hours (1 days)
Standby	feature not registered	feature not registered
➕ Other features
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
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	Fixed QWERTY keyboard	Not supported
Miscellaneous	• Colors: Black, Silver • DTEK system • LED notification • Fast battery charging: 50% in 36min	• 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)
☢️ Radiation rate
	BlackBerry Key2 (BBF100-2)	Asus Zenfone 5Z (ZS621KL 256GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	1.04W/kg (head), 0.37W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.72W/kg (head), 1.68W/kg (body)	1.2W/kg (head), 1.477W/kg (body)