Samsung Galaxy Z Flip 4 (SM-F721B 128GB) vs Asus Zenfone Zoom (ZX551ML 32GB)

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Side by side comparison between Samsung Galaxy Z Flip 4 vs Asus Zenfone Zoom (ZX551ML) phones, differences, pros, cons and full specifications. What's the better?

1/20/2023 7:20 AM, updated: 11/21/2023 4:32 AM

Compare Asus Zenfone Zoom (ZX551ML) X Samsung Galaxy Z Flip 4 (SM-F721B 128GB) 28Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2640

12.2
MP

10mp

8GB
RAM

Octa-core

3700
mAh

(Non removable)

07Points Asus Zenfone Zoom (ZX551ML 32GB) Compare Samsung Galaxy Z Flip 4 X

Specifications Compare Models Pictures

5.5"
IPS

1080x1920

13
MP

5mp

4GB
RAM

Quad-core

3000
mAh

(Non removable)

What's the better phone? Samsung Galaxy Z Flip 4 (SM-F721B 128GB)

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!

28 Advantages Samsung Galaxy Z Flip 4 (SM-F721B 128GB)	vs	7 Advantages Asus Zenfone Zoom (ZX551ML 32GB)
+3.19GHz 64bit Octa-core (4nm)51% More powerful processor, you can open your applications faster	vs	2.5GHz 64bit Quad-core
+8GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR3
+128GB (99GB available)3 times More internal storage for applications and files	vs	32GB (26GB available)
+6.9 millimeters (0.27 inches)74% Thinner	vs	12 millimeters (0.47 inches)
+Dynamic AMOLEDAdvantage Dynamic AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+1080x2640 pixels38% Higher resolution screen	vs	1080x1920 pixels
+426 PPI6% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	401 PPI
+6.7"22% Larger screen	vs	5.5"
+(dual camera) 12.2MP + 12MP89% Higher resolution main camera	vs	(back) 13MP
+HDR photo/video on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+f/1.8 (aperture)50% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.7 (aperture)
+(front) 10MP104% Higher resolution secondary camera to take pictures and selfies	vs	(front) 5MP
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(front) 4K UHD (3840x2160)8 times More image quality for recording videos with the secondary camera	vs	(front) HD (1280x720)
+Android 14Advantage Android 14 is newer and safer	vs	Android 6.0 Marshmallow
+5G Sub6Advantage The 5G Sub6 network is newer and faster	vs	4G LTE
+(5G Sub6) 3000 Mbps19 times Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+BarometerAdvantage Sensors help you use the device	vs	Not supported
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device	vs	Not supported
+3700 mAh23% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+25W39% 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	18W
+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster	vs	802.11 a/b/g/n/ac [wifi5]
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster	vs	4.0 + A2DP
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0, USB OTG On-The-Go
+IPX8 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
Not supported	vs	+Until 128GB microSD, microSDXCAdvantage More external storage for files using memory cards
187 grams (6.55 ounces)	vs	+185 grams (6.48 ounces)1% Lighter
Aluminum frame, flexible plastic screen, glass back	vs	+Aluminum frame, glass front, leather backAdvantage More resistant material
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+Gorilla Glass 4Advantage Protection against scratches on the screen lets you carry your phone with your keys

15 Common items in both devices

16 million

PDAF: phase detection autofocus / LDAF: laser detection autofocus

OIS: Optical stabilization

Capacitive

Multitouch

Accelerometer

Ambient light sensor

+8 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
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Change model		Choose the model
Model	Galaxy Z Flip 4 (SM-F721B 128GB)	Zenfone Zoom (ZX551ML 32GB)
Other model names	Galaxy Z Flip4 5G (SM-F721B)	Asus Zenfone Zoom ZX551ML (4G), Asus ZX551ML
Country or region available	(Global, International)	(Latin America), (Europe)
Brand	Samsung	Asus
Release date	8/25/2022, Announced: 8/10/2022	12/1/2015
Depth	6.9 millimeters (0.27 inches)	12 millimeters (0.47 inches)
Size (width x height)	71.9 x 165.2 millimeters (2.83 x 6.5 in)	78.8 x 158.9 millimeters (3.1 x 6.26 in)
Weight	187 grams (6.55 ounces)	185 grams (6.48 ounces)
Build, materials	Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm	Aluminum frame, glass front, leather back
Protection against water and others	IPX8 certified: water resistant up to 1.5 meters and 30min	Not supported
📲 Display
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Display type	Dynamic AMOLED	TFT IPS LCD
Screen size	6.7" inches	5.5" inches
Screen-to-body ratio	~85.4% (screen-to-body ratio)	~66.6% (screen-to-body ratio)
Display resolution	1080x2640 pixels	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	426 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 4
Refresh rate	120Hz	feature not registered
Display features	1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+	feature not registered
🤖 Operating System
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
System version	Android 12	Android 5.0.2 Lollipop
Firmware update	Android 14	Android 6.0 Marshmallow
User Interface	One UI 4.1 / 5.1 / 6.0	feature not registered
⚙️ Processor
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Chipset	64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm)	64bit: Intel Atom Z3590 (22nm)
CPU	Octa-core, 3 processors: 1x 3.19GHz ARM Cortex-X2 (Single-core) 3x 2.75GHz ARM Cortex-A710 (Triple-core) 4x 2GHz ARM Cortex-A510 (Quad-core)	Quad-core, 1 processor: 4x 2.5GHz Intel Silvermont (Quad-core)
GPU graphical controller	Qualcomm Adreno 730 (818MHz)	PowerVR G6430 MP4
Performance (benchmark)	AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen)	feature not registered
💽 Memory and storage
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
RAM memory	8GB LPDDR5	4GB LPDDR3
Internal storage	128GB (99GB available) UFS 3.1	32GB (26GB available)
External storage	Not supported	Until 128GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Not supported
SIM card	1 slot (Single-SIM) nano-SIM (4FF) + e-SIM	1 slot (Single-SIM) micro-SIM (3FF)
Maximum Download / Upload	3000/1024 Mbps	150/50 Mbps
Network technology	2G, 3G, 4G, 5G	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 850/900/1900/2100
Primary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE	LTE Cat4 (Bands 1, 2, 3, 5, 7, 8, 9, 18, 19, 28)
Primary 5G network	SA/NSA/Sub6 (1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78)	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	UMTS 850/900/1700/1900/2100	Not supported
Secondary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE	Not supported
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	Not supported
📷 Camera
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Back camera (main camera)	(dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm	13 megapixels
Main camera resolution	4032x3024 pixels	4128x3096 pixels
Video recording (primary)	4K UHD (3840x2160) 60 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/2.7 (aperture)
Focal length	24mm lens	28mm lens
Sensor size	1/1.76" inches	feature not registered
Pixel size	1.8µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	LDAF: laser detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	OIS: Optical stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo/video on both cameras	HDR photo only main camera
Camera extras	4K@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion	feature not registered
📸 Front camera
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Front camera (secondary)	10 megapixels	5 megapixels
Front camera resolution	3872x2592 pixels	2560x1920 pixels
Video recording (secondary)	4K UHD (3840x2160)	HD (1280x720)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/2.0 (aperture)
Focal length	26mm lens	feature not registered
Sensor size	1/3" inches	feature not registered
Pixel size	1.22µm pixel	feature not registered
🔉 Sound and multimedia
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Loudspeaker	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG	Supported
Active noise cancellation	2 microphones or more	Not supported
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.264, H.263
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, eAAC+
🔌 Connectivity
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0, USB OTG On-The-Go
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.2 + A2DP/LE	4.0 + A2DP
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Sensors	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3700 mAh	3000 mAh
Charger, watts	25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0	18W Wired fast charging
Inductive / wireless charging	15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging	feature not registered
Talk time autonomy	34 hours (1.4 days)	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
Call control	Voice dialing, Voice recorder, Voice commands	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	Not supported	Not supported
Miscellaneous	• Colors: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard)	• Colors: Black, White • Asus ZenUI • Hoya camera sensor • Laser autofocus camera (0.03 seconds) • 3x optical zoom camera • Dual tone flash • Fast battery charging: 60% in 40min • Beidou GPS • 5GB Asus Webstorage
☢️ Radiation rate
	Galaxy Z Flip 4 (SM-F721B 128GB)	Asus Zenfone Zoom (ZX551ML 32GB)
SAR 1.6W/kg (USA, Mexico, etc.)	1.01W/kg (head), 1.01W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	1.151W/kg (head), 1.198W/kg (body)	feature not registered