Samsung Galaxy A21s (SM-A217F/DSN 32GB) vs Xiaomi Redmi K20 (256GB)

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Side by side comparison between Samsung Galaxy A21s vs Xiaomi Redmi K20 phones, differences, pros, cons and full specifications. What's the better?

7/14/2020 10:55 PM, updated: 7/6/2022 7:26 AM

Compare Xiaomi Redmi K20 X Samsung Galaxy A21s (SM-A217F/DSN 32GB) 04Points

Specifications Compare Models Pictures

6.5"
PLS

720x1600

48
MP

13mp

3GB
RAM

Octa-core

5000
mAh

(Non removable)

21Points Xiaomi Redmi K20 (256GB) Compare Samsung Galaxy A21s X

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

8GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Xiaomi Redmi K20 (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!

4 Advantages Samsung Galaxy A21s (SM-A217F/DSN 32GB)	vs	21 Advantages Xiaomi Redmi K20 (256GB)
+Until 512GB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+6.5"2% Larger screen	vs	6.39"
+Android 12Advantage Android 12 is newer and safer	vs	Android 10
+5000 mAh25% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	4000 mAh
2GHz 64bit Octa-core (8nm)	vs	+2.2GHz 64bit Octa-core (8nm)14% More powerful processor, you can open your applications faster
3GB LPDDR4X	vs	+8GB LPDDR4X167% More RAM memory. Typically more responsive and better for multitasking.
32GB (19GB available)	vs	+256GB (234GB available)11 times More internal storage for applications and files
eMMC 5.1	vs	+UFS 2.1Advantage Fastest write and read storage.
192 grams (6.72 ounces)	vs	+191 grams (6.69 ounces)1% Lighter
8.9 millimeters (0.35 inches)	vs	+8.8 millimeters (0.35 inches)1% Thinner
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
TFT PLS	vs	+AMOLEDAdvantage AMOLED display is brighter and more vivid
Not supported	vs	+HDR10Advantage The HDR10 display provides vibrant colors and more details
720x1600 pixels	vs	+1080x2340 pixels119% Higher resolution screen
270 PPI	vs	+403 PPI49% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(quad camera) 48MP + 8MP + 2MP + 2MP	vs	+(triple camera) 48MP + 8MP + 13MP15% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 13MP	vs	+(front) 20MP56% Higher resolution secondary camera to take pictures and selfies
Full HD (1920x1080)	vs	+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 800 Mbps167% Faster for surfing the internet and download files
Virtual ambient light sensor	vs	+Ambient light sensorAdvantage Sensors help you use the device
15W	vs	+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.
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys

26 Common items in both devices

60Hz

16 million

PDAF: phase detection autofocus

EIS: Digital stabilization

HDR photo on both cameras

1/2" inches

(front) Full HD (1920x1080)

+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 A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Change model		Choose the model
Model	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Other model names	Galaxy A21s SM-A217F/Dual-Sim NFC (32GB + 3GB RAM)	Xiaomi Redmi K20 M1903F10A, M1903F10C, M1903F10T
Country or region available	(Europe), (United Kingdom), Kazakhstan, Russia	China
Brand	Samsung	Xiaomi
Release date	6/2/2020, Announced: 5/15/2020	6/1/2019
Depth	8.9 millimeters (0.35 inches)	8.8 millimeters (0.35 inches)
Size (width x height)	75.3 x 163.7 millimeters (2.96 x 6.44 in)	74.3 x 156.7 millimeters (2.93 x 6.17 in)
Weight	192 grams (6.72 ounces)	191 grams (6.69 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Display type	TFT PLS	AMOLED
Screen size	6.5" inches	6.39" inches
Screen-to-body ratio	~82.8% (screen-to-body ratio)	~86.1% (screen-to-body ratio)
Display resolution	720x1600 pixels (20:9)	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	270 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	60Hz	60Hz
Display features	Not supported	600nits[typ] HDR10
🤖 Operating System
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
System version	Android 10	Android 9.0 Pie
Firmware update	Android 12	Android 10
User Interface	One UI 2.0 / 3.1 / 4.1	feature not registered
⚙️ Processor
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Chipset	64bit: Samsung Exynos 850 (8nm)	64bit: Qualcomm Snapdragon 730 (SM7150-AA) (8nm)
CPU	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A55 (Octa-core)	Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core)
GPU graphical controller	ARM Mali-G52 MP1	Qualcomm Adreno 618 (610MHz)
Performance (benchmark)	AnTuTu: 107157 (v8) Geekbench: 1100 (v5.1) GFXBench: 11fps (ES 3.1 onscreen)	feature not registered
💽 Memory and storage
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
RAM memory	3GB LPDDR4X	8GB LPDDR4X
Internal storage	32GB (19GB available) eMMC 5.1	256GB (234GB available) UFS 2.1
External storage	Until 512GB microSD, microSDXC (dedicated slot)	Not supported
📶 Mobile networks
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated 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	300/150 Mbps	800/150 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 (China), GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	MZB7754IN, MZB7755IN, MZB7756IN version: UMTS 850/900/1900/2100 M1903F10A, M1903F10C, M1903F10T version: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100
Primary 4G network	LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)	LTE Cat15/13 VoLTE MZB7754IN, MZB7755IN, MZB7756IN version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 38, 40, 41) M1903F10A, M1903F10C, M1903F10T version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 34, 38, 39, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, 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 850/900/1900/2100	Not supported
Secondary 4G network	LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)	Not supported
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE
📷 Camera
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Back camera (main camera)	(quad camera) 48 megapixels 8MP ultrawide f/2.21/4"1.12µm123° 2MP macro f/2.4 2MP depth f/2.4	(triple camera) 48 megapixels 8MP telephoto f/2.453mm1/4"1.12µmPDAF2x-optical-zoom 13MP ultrawide f/2.412mm1/3"1.12µm
Main camera resolution	8000x6000 pixels	8000x6000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	26mm lens	26mm lens
Sensor size	1/2" inches	1/2" 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	Digital and optical 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
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Front camera (secondary)	13 megapixels	20 megapixels *Motorized pop-up camera (slider)
Front camera resolution	4128x3096 pixels	5184x3840 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.2 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/3.1" inches	feature not registered
Pixel size	1.12µm pixel	0.8µm pixel
🔉 Sound and multimedia
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Loudspeaker	Mono sound (not stereo)	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
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
USB	USB 2.0 Type-C reversible connector	USB 2.0 Type-C, USB OTG On-The-Go
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, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Sensors	Accelerometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor Virtual ambient light sensor	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	5000 mAh	4000 mAh
Charger, watts	15W (9V/1.67A) Wired fast charging	18W (9V/2A) Wired fast charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
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: Black, White, Blue, Red	• Colors: Carbon black, Flame red, Glacier blue • MIUI 10 • HDR display • 24-bit/192kHz audio • Quick Charge 4+
☢️ Radiation rate
	Galaxy A21s (SM-A217F/DSN 32GB)	Redmi K20 (256GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	1.07W/kg (head), 0.72W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	0.422W/kg (head), 1.544W/kg (body)	feature not registered