Xiaomi Redmi Note 8 (64GB/4GB) vs Samsung Galaxy A21 (SM-A215U)

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Side by side comparison between Xiaomi Redmi Note 8 vs Samsung Galaxy A21 phones, differences, pros, cons and full specifications. What's the better?

9/27/2020 11:44 PM, updated: 9/28/2020 12:22 AM

Compare Samsung Galaxy A21 X Xiaomi Redmi Note 8 (64GB/4GB) 15Points

Specifications Compare Models Pictures

6.3"
IPS

1080x2340

48
MP

13mp

4GB
RAM

Octa-core

4000
mAh

(Non removable)

04Points Samsung Galaxy A21 (SM-A215U) Compare Xiaomi Redmi Note 8 X

Specifications Compare Models Pictures

6.5"
PLS

720x1600

16
MP

13mp

3GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Xiaomi Redmi Note 8 (64GB/4GB)

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!

15 Advantages Xiaomi Redmi Note 8 (64GB/4GB)	vs	4 Advantages Samsung Galaxy A21 (SM-A215U)
+2GHz 64bit Octa-core (11nm)7% More powerful processor, you can open your applications faster	vs	2.3GHz 64bit Octa-core (12nm)
+4GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	3GB LPDDR3
+64GB (51GB available)155% More internal storage for applications and files	vs	32GB (20GB available)
+190 grams (6.65 ounces)2% Lighter	vs	193 grams (6.76 ounces)
+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid	vs	TFT PLS
+1080x2340 pixels119% Higher resolution screen	vs	720x1600 pixels
+409 PPI51% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	270 PPI
+(quad camera) 48MP + 8MP + 2MP + 2MP115% Higher resolution main camera	vs	(quad camera) 16MP + 8MP + 2MP + 2MP
+1/2" inches53% The larger sensor camera lets you take photos with better depth.	vs	1/3.06" inches
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(4G LTE-A) 600 Mbps3 times Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+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
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
+P2i certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
8.35 millimeters (0.33 inches)	vs	+8.1 millimeters (0.32 inches)3% Thinner
6.3"	vs	+6.5"3% Larger screen
Android 9.0 Pie	vs	+Android 10Advantage Android 10 is newer and safer
4.2 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster

31 Common items in both devices

eMMC 5.1

Until 512GB microSD, microSDXC

Plastic body, glass front/back / Plastic body, glass front

60Hz

16 million

LED flash

Only digital zoom

+24 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
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Change model		Choose the model
Model	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Other model names	Mi Redmi Note 8 (4GB RAM) M1908C3JG, M1908C3JE, M1908C3JH	Galaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon)
Country or region available	(Global, International), India	USA
Brand	Xiaomi	Samsung
Release date	9/26/2019	6/26/2020
Depth	8.35 millimeters (0.33 inches)	8.1 millimeters (0.32 inches)
Size (width x height)	75.3 x 158.3 millimeters (2.96 x 6.23 in)	76.7 x 167.8 millimeters (3.02 x 6.61 in)
Weight	190 grams (6.65 ounces)	193 grams (6.76 ounces)
Build, materials	Plastic body, glass front/back	Plastic body, glass front
Protection against water and others	P2i certified: water repellent nano-coating	Not supported
📲 Display
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Display type	TFT IPS LCD	TFT PLS
Screen size	6.3" inches	6.5" inches
Screen-to-body ratio	~81.7% (screen-to-body ratio)	~79.3% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	720x1600 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	409 PPI	270 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Not supported
Refresh rate	60Hz	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
System version	Android 9.0 Pie	Android 10
Firmware update	feature not registered	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Chipset	64bit: Qualcomm Snapdragon 665 (SM6125) (11nm)	64bit: MediaTek Helio P35 (MT6765) (12nm)
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-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	Qualcomm Adreno 610	PowerVR GE8320 MP2 (680MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
RAM memory	4GB LPDDR4X	3GB LPDDR3
Internal storage	64GB (51GB available) eMMC 5.1	32GB (20GB available) eMMC 5.1
External storage	Until 512GB microSD, microSDXC (dedicated slot)	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) nano-SIM (4FF)
Maximum Download / Upload	600/150 Mbps	150/50 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	CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G network	M1908C3JG version: UMTS 850/900/1700/1900/2100 M1908C3JE, M1908C3JH versions: UMTS 850/900/1900/2100	CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat12/13 VoLTE M1908C3JG version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (Bands 38, 40) M1908C3JE, M1908C3JH versions: LTE (Bands 1, 3, 5, 8) TD-LTE (Bands 40, 41)	LTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28) 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
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Back camera (main camera)	(quad camera) 48 megapixels 8MP ultrawide f/2.213mm1/4"1.12µm 2MP macro f/2.41/5"1.75µm 2MP depth f/2.41/5"1.75µm	(quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4
Main camera resolution	8000x6000 pixels	4608x3456 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/1.8 (aperture)
Focal length	26mm lens	feature not registered
Sensor size	1/2" inches	1/3.06" inches
Pixel size	0.8µm pixel	1µm 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	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Front camera (secondary)	13 megapixels	13 megapixels
Front camera resolution	4128x3096 pixels	4128x3096 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	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	1.12µm pixel	1.12µm pixel
🔉 Sound and multimedia
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
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
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
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	4.2 + A2DP	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, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS
NFC	Not supported	Not supported
Infrared port	Supported	Not supported
🧭 Sensors
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	4000 mAh	4000 mAh
Charger, watts	18W Wired fast charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
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: Space Black, Moonlight White, Neptune Blue • MIUI 10	• Colors: Black • One UI 2.0
☢️ Radiation rate
	Redmi Note 8 (64GB/4GB)	Galaxy A21 (SM-A215U)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.6W/kg (head), 1.27W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered