Samsung Galaxy Z Flip 3 (SM-F711B 256GB) vs Samsung Galaxy M21s (SM-F415F/DS)

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Side by side comparison between Samsung Galaxy Z Flip 3 vs Samsung Galaxy M21s phones, differences, pros, cons and full specifications. What's the better?

10/2/2021 8:05 PM, updated: 5/19/2025 11:37 AM

Compare Samsung Galaxy M21s X Samsung Galaxy Z Flip 3 (SM-F711B 256GB) 27Points

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2640

12.2
MP

10mp

8GB
RAM

Octa-core

3300
mAh

(Non removable)

08Points Samsung Galaxy M21s (SM-F415F/DS) Compare Samsung Galaxy Z Flip 3 X

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

Octa-core

6000
mAh

(Non removable)

What's the better phone? Samsung Galaxy Z Flip 3 (SM-F711B 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!

27 Advantages Samsung Galaxy Z Flip 3 (SM-F711B 256GB)	vs	8 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+2.84GHz 64bit Octa-core (5nm)38% More powerful processor, you can open your applications faster	vs	2.3GHz 64bit Octa-core (10nm)
+8GB LPDDR5100% More RAM memory. Typically more responsive and better for multitasking.	vs	4GB LPDDR4X
+256GB (220GB available)3 times More internal storage for applications and files	vs	64GB (49GB available)
+UFS 3.1Advantage Fastest write and read storage.	vs	UFS 2.1
+183 grams (6.41 ounces)4% Lighter	vs	191 grams (6.69 ounces)
+6.9 millimeters (0.27 inches)29% Thinner	vs	8.9 millimeters (0.35 inches)
+Aluminum frame, flexible plastic screen, glass backAdvantage More resistant material	vs	Plastic body, glass front
+HDR10+Advantage The HDR10+ display provides vibrant colors and more details	vs	Not supported
+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.	vs	60Hz
+1080x2640 pixels13% Higher resolution screen	vs	1080x2340 pixels
+426 PPI6% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	403 PPI
+6.7"5% Larger screen	vs	6.4"
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+(front) 4K UHD (3840x2160)3 times More image quality for recording videos with the secondary camera	vs	(front) Full HD (1920x1080)
+Android 15Advantage Android 15 is newer and safer	vs	Android 12
+5G Sub6Advantage The 5G Sub6 network is newer and faster	vs	4G LTE-A
+(5G Sub6) 3000 Mbps9 times Faster for surfing the internet and download files	vs	(4G LTE-A) 300 Mbps
+BarometerAdvantage Sensors help you use the device	vs	Not supported
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
+Qi Wireless charging (Qi/WPC)Advantage Wireless charging is another way to charge the battery.	vs	Not supported
+1 slot (Single-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.	vs	2 slots (Dual-SIM) (dedicated slot)
+Stereo soundAdvantage Better sound quality for listening to music or clearer hands-free calls	vs	Mono sound (not stereo)
+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
+5.1 + A2DP/LEAdvantage Bluetooth 5.1 + A2DP/LE is newer and faster	vs	5.0 + A2DP/LE
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
+IPX8 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
Not supported	vs	+Until 512GB microSD, microSDXCAdvantage More external storage for files using memory cards
(dual camera) 12.2MP + 12MP	vs	+(triple camera) 64MP + 8MP + 5MP2 times Higher resolution main camera
1/2.55" inches	vs	+1/1.72" inches48% The larger sensor camera lets you take photos with better depth.
(front) 10MP	vs	+(front) 32MP2 times Higher resolution secondary camera to take pictures and selfies
3300 mAh	vs	+6000 mAh82% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
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	+FM (RDS)Advantage The radio lets you listen to your songs and sports in general
Not supported	vs	+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys

26 Common items in both devices

Dynamic AMOLED / Super AMOLED

16 million

LED flash

Only digital zoom

PDAF: phase detection autofocus

BSI sensor

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

+19 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 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Change model
Model	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Other model names	Galaxy Z Flip3 5G (SM-F711B)	Galaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region available	(Global, International)	(Latin America), Brazil
Brand	Samsung	Samsung
Release date	8/27/2021, Announced: 8/11/2021	11/6/2020
Depth	6.9 millimeters (0.27 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	72.2 x 166 millimeters (2.84 x 6.54 in)	75.1 x 159.2 millimeters (2.96 x 6.27 in)
Weight	183 grams (6.41 ounces)	191 grams (6.69 ounces)
Build, materials	Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus	Plastic body, glass front
Protection against water and others	IPX8 certified: water resistant up to 1.5 meters and 30min	Not supported
📲 Display
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Display type	Dynamic AMOLED	Super AMOLED
Screen size	6.7" inches	6.4" inches
Screen-to-body ratio	~84.7% (screen-to-body ratio)	~84.1% (screen-to-body ratio)
Display resolution	1080x2640 pixels	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	426 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 3
Refresh rate	120Hz	60Hz
Display features	1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512)	420nits[peak]
🤖 Operating System
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
System version	Android 11	Android 10
Firmware update	Android 15	Android 12
User Interface	One UI 3.1 / 4.1 / 5.0 / 6.0 / 7.0	One UI 2.5 / 3.1 / 4.1
⚙️ Processor
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Chipset	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	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)	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 660 (840MHz)	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	AnTuTu: 596866 (v8), 682223 (v9) Geekbench: 3441 (v5.1) GFXBench: 40fps (ES 3.1 onscreen)	feature not registered
💽 Memory and storage
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
RAM memory	8GB LPDDR5	4GB LPDDR4X
Internal storage	256GB (220GB available) UFS 3.1	64GB (49GB available) UFS 2.1
External storage	Not supported	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF) + e-SIM	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	3000/1024 Mbps	300/50 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 850/900/1700/1900/2100
Primary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) 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 network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 28, 40, 41, 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+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Back camera (main camera)	(dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm	(triple camera) 64 megapixels 8MP ultrawide f/2.2123°12mm1/4"1.12µm 5MP depth f/2.2
Main camera resolution	4032x3024 pixels	10120x6328 pixels
Video recording (primary)	4K UHD (3840x2160) 60 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	27mm (lens)	26mm (lens)
Sensor size	1/2.55" inches	1/1.72" inches
Pixel size	1.4µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Supported
HDR	HDR photo/video on both cameras	HDR photo on both cameras
Camera extras	4K@30/60fps 1080p@30/60fps 1080p@240fps (slow motion) 720p@960fps (slow motion)	4K@30fps 1080p@30fps
📸 Front camera
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Front camera (secondary)	10 megapixels	32 megapixels
Front camera resolution	3872x2592 pixels	6528x4896 pixels
Video recording (secondary)	4K UHD (3840x2160)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/2.0 (aperture)
Focal length	26mm (lens)	26mm (lens)
Sensor size	1/3" inches	1/2.8" inches
Pixel size	1.12µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Loudspeaker	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	Not supported	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.1 + A2DP/LE	5.0 + A2DP/LE
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) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Sensors	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3300 mAh	6000 mAh
Charger, watts	15W Wired fast charging Reverse charging by cable USB Power Delivery 3.0	15W Wired fast charging
Inductive / wireless charging	10W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging	Not supported
Talk time autonomy	26 hours (1.1 days)	48 hours (2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
Call control	Voice dialing, Voice recorder, Voice commands	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: Phantom Black, Green, Lavender, Cream, White, Pink, Gray • Samsung DeX • Samsung Pay	• Colors: Black, Blue
☢️ Radiation rate
	Galaxy Z Flip 3 (SM-F711B 256GB)	Galaxy M21s (SM-F415F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.383W/kg (head)
SAR 2W/kg (Europe, UK, etc.)	0.858W/kg (head), 1.578W/kg (body)	feature not registered