Xiaomi Mi A3 (128GB) vs Samsung Galaxy M21s (SM-F415F/DS)

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Side by side comparison between Xiaomi Mi A3 vs Samsung Galaxy M21s phones, differences, pros, cons and full specifications. What's the better?

11/25/2020 11:20 AM, updated: 1/18/2023 4:22 AM

Compare Samsung Galaxy M21s X Xiaomi Mi A3 (128GB) 07Points

Specifications Compare Models Pictures

6.088"
AMOLED

720x1560

48
MP

32mp

4GB
RAM

Octa-core

4030
mAh

(Non removable)

10Points Samsung Galaxy M21s (SM-F415F/DS) Compare Xiaomi Mi A3 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 M21s (SM-F415F/DS)

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!

7 Advantages Xiaomi Mi A3 (128GB)	vs	10 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+128GB (109GB available)122% More internal storage for applications and files	vs	64GB (49GB available)
+174 grams (6.09 ounces)10% Lighter	vs	191 grams (6.69 ounces)
+8.5 millimeters (0.33 inches)5% Thinner	vs	8.9 millimeters (0.35 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+(4G LTE-A) 450 Mbps50% Faster for surfing the internet and download files	vs	(4G LTE-A) 300 Mbps
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
+18W20% 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	15W
2GHz 64bit Octa-core (11nm)	vs	+2.3GHz 64bit Octa-core (10nm)3% More powerful processor, you can open your applications faster
720x1560 pixels	vs	+1080x2340 pixels125% Higher resolution screen
282 PPI	vs	+403 PPI43% Crisper display of text, images and videos because it has more pixels per inch (ppi)
6.088"	vs	+6.4"5% Larger screen
(triple camera) 48MP + 8MP + 2MP	vs	+(triple camera) 64MP + 8MP + 5MP33% 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" inches	vs	+1/1.72" inches16% The larger sensor camera lets you take photos with better depth.
Android 11	vs	+Android 12Advantage Android 12 is newer and safer
4030 mAh	vs	+6000 mAh49% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.

38 Common items in both devices

4GB LPDDR4X

UFS 2.1

Until 512GB microSD, microSDXC

Super AMOLED

60Hz

16 million

LED flash

+31 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
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Change model
Model	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Other model names	Xiaomi Mi A3 (Android One), M1906F9SH, M1906F9SI	Galaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region available	(Global, International)	(Latin America), Brazil
Brand	Xiaomi	Samsung
Release date	7/24/2019, Announced: 7/17/2019	11/6/2020
Depth	8.5 millimeters (0.33 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	71.85 x 153.48 millimeters (2.83 x 6.04 in)	75.1 x 159.2 millimeters (2.96 x 6.27 in)
Weight	174 grams (6.09 ounces)	191 grams (6.69 ounces)
Build, materials	Aluminum frame, glass front/back	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Display type	Super AMOLED	Super AMOLED
Screen size	6.088" inches	6.4" inches
Screen-to-body ratio	~82.5% (screen-to-body ratio)	~84.1% (screen-to-body ratio)
Display resolution	720x1560 pixels (19.5:9)	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	282 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 3
Refresh rate	60Hz	60Hz
Display features	Not supported	420nits[peak]
🤖 Operating System
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
System version	Android 9.0 Pie	Android 10
Firmware update	Android 11	Android 12
User Interface	Android One	One UI 2.5 / 3.1 / 4.1
⚙️ Processor
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Chipset	64bit: Qualcomm Snapdragon 665 (SM6125) (11nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Octa-core, 2 processors: 4x 2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (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 610	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
RAM memory	4GB LPDDR4X	4GB LPDDR4X
Internal storage	128GB (109GB available) UFS 2.1	64GB (49GB available) UFS 2.1
External storage	Until 512GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
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 (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	450/50 Mbps	300/50 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 850/900/1700/1900/2100
Primary 4G network	LTE Cat9 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40) 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	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	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	Not supported	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+	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Back camera (main camera)	(triple camera) 48 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP depth f/2.4	(triple camera) 64 megapixels 8MP ultrawide f/2.2123°12mm1/4"1.12µm 5MP depth f/2.2
Main camera resolution	8000x6000 pixels	10120x6328 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	1/2" inches	1/1.72" inches
Pixel size	0.8µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital 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 on both cameras
Camera extras	1080p@120fps	4K@30fps 1080p@30fps
📸 Front camera
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Front camera (secondary)	32 megapixels	32 megapixels
Front camera resolution	6528x4896 pixels	6528x4896 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	26mm (lens)	26mm (lens)
Sensor size	1/2.8" inches	1/2.8" inches
Pixel size	0.8µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Loudspeaker	Mono sound (not stereo)	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	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
	Xiaomi Mi A3 (128GB)	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	3.5mm jack	3.5mm jack
TV output	Not supported	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) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Not supported
Infrared port	Supported	Not supported
🧭 Sensors
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	4030 mAh	6000 mAh
Charger, watts	18W (9V/2A) Wired fast charging Quick Charge 3	15W Wired fast charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	48 hours (2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Xiaomi Mi A3 (128GB)	Galaxy M21s (SM-F415F/DS)
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: Gray, White, Blue	• Colors: Black, Blue
☢️ Radiation rate
	Xiaomi Mi A3 (128GB)	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.)	feature not registered	feature not registered