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Asus Zenfone 8 Flip (128GB) vs Samsung Galaxy M21s (SM-F415F/DS)

Side by side comparison between Asus Zenfone 8 Flip vs Samsung Galaxy M21s phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy M21s XAsus Zenfone 8 Flip (128GB)22Points
Asus Zenfone 8 Flip (128GB)
6.67"
AMOLED

1080x2400

64
MP

8GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
05PointsSamsung Galaxy M21s (SM-F415F/DS)Compare Asus Zenfone 8 Flip X
Samsung Galaxy M21s (SM-F415F/DS)
6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

64bit Octa

6000
mAh

(Non removable)

What's the better phone? Asus Zenfone 8 Flip (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!

Zenfone 8 Flip (128GB)22 Advantages Asus Zenfone 8 Flip (128GB)vsGalaxy M21s (SM-F415F/DS)5 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+2.84Ghz 64bit Octa-Core29%
More powerful processor, you can open your applications faster
vs2.3Ghz 64bit Octa-Core
+8GB LPDDR5100%
More RAM memory. Typically more responsive and better for multitasking.
vs4GB LPDDR4X
+128GB (107GB available)118%
More internal storage for applications and files
vs64GB (49GB available)
+UFS 3.1Advantage
Fastest write and read storage.
vsUFS 2.1
+169 grams (5.92 ounces)13%
Lighter
vs191 grams (6.69 ounces)
+Aluminum frame, glass front/backAdvantage
More resistant material
vsPlastic body, glass front
+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
vsNot supported
+90Hz50%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
vs60Hz
+1080x2400 pixels3%
Higher resolution screen
vs1080x2340 pixels
+6.67"4%
Larger screen
vs6.4"
+(triple camera) 64MP + 12MP + 8MP9%
Higher resolution main camera
vs(triple camera) 64MP + 8MP + 5MP
+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
vsOnly digital zoom
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+8K UHD (7680x4320)3 times
More image quality for recording videos with the primary camera
vs4K UHD (3840x2160)
+5G SA/NSAAdvantage
The 5G SA/NSA network is newer and faster
vs4G+ LTE-A
+(5G SA/NSA) 2000 Mbps6 times
Faster for surfing the internet and download files
vs(4G+ LTE-A) 300 Mbps
+Proximity sensorAdvantage
Sensors help you use the device
vsNot supported
+30W100%
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.
vs15W
+802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO is newer and faster
vs802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
+5.2 + A2DP/LEAdvantage
Bluetooth 5.2 + A2DP/LE is newer and faster
vs5.0 + A2DP/LE
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
395 PPIvs+403 PPI2%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
1/1.73" inchesvs+1/1.72" inches1%
The larger sensor camera lets you take photos with better depth.
Type-C reversible connectorvs+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
5000 mAhvs+6000 mAh20%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supportedvs+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general

28 Common items in both devices
Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC
8.9 millimeters (0.35 inches)
Super AMOLED
16 million
LED flash
PDAF: phase detection autofocus
EIS: Digital stabilization
+21 specs and more in the table below

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

Highlight differencesClear highlight
Physical featuresAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
ModelZenfone 8 Flip (128GB)Galaxy M21s (SM-F415F/DS)
Other model namesAsus Zenfone 8 (ZS672KS)Galaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region available(Global, International)
(Global, International)
(Latin America)Brazil
(Latin America), Brazil
BrandAsusSamsung
Release dateMay, 2021November, 2020
Depth8.9 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)68.5 x 148 millimeters (2.7 x 5.83 in)75.1 x 159.2 millimeters (2.96 x 6.27 in)
Weight169 grams (5.92 ounces)191 grams (6.69 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsAluminum frame, glass front/backPlastic body, glass front
Protection against water and othersIP68 certified: dust proof and waterproof over 1.5 meter and 30minNot supported
System (OS)Asus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Operating systemAndroid 11Android 10
Firmware updatefeature not registeredAndroid 11
HardwareAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Chipset64bit - Qualcomm Snapdragon 888 SM8350 (5nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 3 processors:
2.84Ghz Single-Core Kryo 680
2.42Ghz 3-Cores Kryo 680
1.8Ghz Quad-Core Kryo 680
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 660 840MhzARM Mali-G72 MP3
RAM memory8GB LPDDR54GB LPDDR4X
Internal storage128GB (107GB available)
UFS 3.1
64GB (49GB available)
UFS 2.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplayAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Display typeSuper AMOLEDSuper AMOLED
Screen size6.67" inches6.4" inches
Screen-to-body ratio~105.9% (screen-to-body ratio)~84.1% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1080x2340 pixels (19.5:9)
TouchscreenCapacitive Multitouch 10-pointsCapacitive Multitouch
Pixel density (dot pitch)395 PPI403 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 6Gorilla Glass 3
Display features90Hz, 1000 nits, HDR10+60Hz, 420 nits
Mobile networksAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Dual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload2000/1024 Mbps300/50 Mbps
Network technology2G, 3G, 4G, 5G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 800/850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28)
TD-LTE (34, 38, 39, 40, 41, 42)
VoLTE
LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkSA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78)Not supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 800/850/900/1700/1900/2100Not supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+GPRS, EDGE
CallingAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
CameraAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Back camera (main camera)(triple camera)
64 megapixels
12MP ultrawidef/2.2112º14mm1/2.55"1.4µmPDAF
8MP telephotof/2.480mmPDAF3x-optical-zoom
(triple camera)
64 megapixels
8MP ultrawidef/2.2123º12mm1/4"1.12µm
5MP depthf/2.2
Main camera resolution10120x6328 pixels10120x6328 pixels
Video recording (primary)8K UHD (7680x4320) 24 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.73" inches1/1.72" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomDigital and optical zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedNot supported
HDRHDR photo/video on both camerasHDR photo on both cameras
2ª cameraAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Front camera (secondary)Uses the back motorized camera (flip-up/rotating)32 megapixels
Front camera resolutionNot supported6528x4896 pixels
Video recording (secondary)Not supportedFull HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturefeature not registeredf/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel sizefeature not registered0.8µm pixel
MultimediaAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
RadioNot supportedFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivityAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C reversible connector
TV outputUSB Type-C (reversible)Not supported
Audio outputType-C reversible connector3.5mm jack
Bluetooth5.2 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac/ax wifi6 (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCSupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavICA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
Accelerometer
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Galactic Black, Glacier Silver
- ZenUI 8
- Always-on display
- 24-bit/192kHz audio
- WiFi direct, hotspot
- Colors: Black, Blue
- One UI 2.5, 3.1
- Stereo sound not supported
- DeX not supported
- WiFi direct, hotspot
Power supplyAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 mAh6000 mAh
Charger, watts30W Fast battery charging
Quick Charge 4
USB Power Delivery 3.0
15W Fast battery charging
Talk time autonomyfeature not registered2880 minutes | 48 hours | 2 days
Standbyfeature not registeredfeature not registered
Radiation rateAsus Zenfone 8 Flip (128GB)Samsung Galaxy M21s (SM-F415F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.383W/kg (head)
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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