Asus Zenfone Zoom S (128GB) vs Samsung Galaxy S21 FE (SM-G990U 128GB)

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Side by side comparison between Asus Zenfone Zoom S vs Samsung Galaxy S21 FE phones, differences, pros, cons and full specifications. What's the better?

1/20/2022 6:10 PM, updated: 5/19/2025 11:24 AM

Compare Samsung Galaxy S21 FE X Asus Zenfone Zoom S (128GB) 08Points

Specifications Compare Models Pictures

5.5"
AMOLED

1080x1920

12
MP

13mp

4GB
RAM

Octa-core

5000
mAh

(Non removable)

24Points Samsung Galaxy S21 FE (SM-G990U 128GB) Compare Asus Zenfone Zoom S X

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2400

12.2
MP

32mp

6GB
RAM

Octa-core

4500
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 FE (SM-G990U 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!

8 Advantages Asus Zenfone Zoom S (128GB)	vs	24 Advantages Samsung Galaxy S21 FE (SM-G990U 128GB)
+128GB (118GB available)22% More internal storage for applications and files	vs	128GB (97GB available)
+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+170 grams (5.95 ounces)4% Lighter	vs	177 grams (6.2 ounces)
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+f/1.7 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/1.8 (aperture)
+5000 mAh11% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4500 mAh
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+FMAdvantage The radio lets you listen to your songs and sports in general	vs	Not supported
2GHz 64bit Octa-core	vs	+2.84GHz 64bit Octa-core (5nm)29% More powerful processor, you can open your applications faster
4GB LPDDR3	vs	+6GB LPDDR550% More RAM memory. Typically more responsive and better for multitasking.
8 millimeters (0.31 inches)	vs	+7.9 millimeters (0.31 inches)1% Thinner
AMOLED	vs	+Dynamic AMOLEDAdvantage Dynamic AMOLED display is brighter and more vivid
1080x1920 pixels	vs	+1080x2400 pixels25% Higher resolution screen
401 PPI	vs	+411 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.5"	vs	+6.4"16% Larger screen
(dual camera) 12MP + 12MP	vs	+(triple camera) 12.2MP + 12MP + 8MP34% Higher resolution main camera
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
1/2.5" inches	vs	+1/1.76" inches42% The larger sensor camera lets you take photos with better depth.
(front) 13MP	vs	+(front) 32MP150% Higher resolution secondary camera to take pictures and selfies
(front) Full HD (1920x1080)	vs	+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera
Android 8.0 Oreo	vs	+Android 15Advantage Android 15 is newer and safer
4G LTE	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(4G LTE) 150 Mbps	vs	+(5G SA/NSA) 2000 Mbps12 times Faster for surfing the internet and download files
Not supported	vs	+BarometerAdvantage Sensors help you use the device
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
18W	vs	+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.
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
4.2 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
USB 2.0 Type-C, USB OTG On-The-Go	vs	+USB 3.2 Type-C, USB OTG On-The-GoAdvantage Newer and faster USB version for transferring photos, mp3 or data.
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

24 Common items in both devices

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

16 million

Digital and optical zoom

LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus

OIS (4-axis): Optical stabilization / OIS: Optical stabilization

HDR photo on both cameras / HDR photo/video on both cameras

4K UHD (3840x2160)

+17 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 Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Change model		Choose the model
Model	Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Other model names	Asus Zenfone Zoom S ZE553KL, Asus Zenfone 3 Zoom	Galaxy S21 FE 5G SM-G990U1 (Snapdragon)
Country or region available	(Europe), Indonesia	USA
Brand	Asus	Samsung
Release date	5/1/2017	1/7/2022, Announced: 1/4/2022
Depth	8 millimeters (0.31 inches)	7.9 millimeters (0.31 inches)
Size (width x height)	77 x 154.3 millimeters (3.03 x 6.07 in)	74.5 x 155.7 millimeters (2.93 x 6.13 in)
Weight	170 grams (5.95 ounces)	177 grams (6.2 ounces)
Build, materials	Aluminum body, glass front	Aluminum body, glass front, plastic back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Display type	AMOLED	Dynamic AMOLED
Screen size	5.5" inches	6.4" inches
Screen-to-body ratio	~70.2% (screen-to-body ratio)	~85.3% (screen-to-body ratio)
Display resolution	1080x1920 pixels	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	401 PPI	411 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass Victus
Refresh rate	feature not registered	120Hz
Display features	feature not registered	1300nits[peak] HDR10+ Always-On Display
🤖 Operating System
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
System version	Android 6.0.1 Marshmallow	Android 12
Firmware update	Android 8.0 Oreo	Android 15
User Interface	feature not registered	One UI 4.1 / 5.1 / 6.0 / 7.0
⚙️ Processor
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Chipset	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
CPU	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)	Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controller	Qualcomm Adreno 506 650Mhz	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	feature not registered	AnTuTu: 566529 (v8), 719696 (v9) Geekbench: 3049 (v5.1) GFXBench: 56fps (ES 3.1 onscreen)
💽 Memory and storage
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
RAM memory	4GB LPDDR3	6GB LPDDR5
Internal storage	128GB (118GB available)	128GB (97GB available) UFS 3.1
External storage	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
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
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	2000/1024 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G, 5G
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	TD-SCDMA 1900/2000 UMTS 850/900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat4 850/900/1800/2100 (Bands 1,3,5,8)	LTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE
Primary 5G network	Not supported	SA/NSA/Sub6 (1, 3, 5, 8, 28, 41, 78, 79)
Primary data network	GPRS, EDGE, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
📷 Camera
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Back camera (main camera)	(dual camera) 12 megapixels 12MP f/2.859mm	(triple camera) 12.2 megapixels 12MP ultrawide f/2.2123°13mm1/3"1.12µm 8MP telephoto f/2.476mm1/4.5"1.0µmPDAFOIS3x-optical-zoom
Main camera resolution	4000x3000 pixels	4032x3024 pixels
Video recording (primary)	4K UHD (3840x2160) 24 fps	4K UHD (3840x2160) 60 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/1.7 (aperture)	f/1.8 (aperture)
Focal length	25mm (lens)	26mm (lens)
Sensor size	1/2.5" inches	1/1.76" inches
Pixel size	1.4µm pixel	1.8µm pixel
Autofocus	LDAF/PDAF: laser/phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS (4-axis): Optical stabilization	OIS: Optical stabilization
Zoom	Digital and optical zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo on both cameras	HDR photo/video on both cameras
Camera extras	feature not registered	4K@30/60fps 1080p@30/60fps 1080p@240fps (slow motion) 720p@960fps (slow motion)
📸 Front camera
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Front camera (secondary)	13 megapixels	32 megapixels
Front camera resolution	4128x3096 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	1/3" inches	1/2.74" inches
Pixel size	1.12µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Loudspeaker	Supported	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG
Active noise cancellation	2 microphones or more	2 microphones
Radio	FM	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C SlimPort®
Bluetooth	4.2 + A2DP	5.0 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Supported
Infrared port	Supported	Not supported
🧭 Sensors
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	4500 mAh
Charger, watts	18W Wired fast charging	25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0
Inductive / wireless charging	feature not registered	15W Qi wireless charging 4.5W Reverse wireless charging
Talk time autonomy	48 hours (2 days)	feature not registered
Standby	1008 hours (42 days)	feature not registered
➕ Other features
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
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: Black, Silver, Rose Gold • ASUS ZenUI 3.0 • 2.5D glass screen • 500nits brightness screen • Sony IMX362 back camera sensor • Sony IMX214 front camera sensor • DTS sound enhancement • 24-bit/192kHz audio • 100GB Google Drive	• Colors: Graphite, White, Lavender, Olive
☢️ Radiation rate
	Asus Zenfone Zoom S (128GB)	Galaxy S21 FE (SM-G990U 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.77W/kg (head), 0.9W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered