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Xiaomi Redmi Note 9 (128GB/6GB) vs Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)

Side by side comparison between Xiaomi Redmi Note 9 vs Samsung Galaxy A21s phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A21s XXiaomi Redmi Note 9 (128GB/6GB)14Points
Xiaomi Redmi Note 9 (128GB/6GB)
6.53"
IPS

1080x2340

48
MP

13mp

6GB
RAM

64bit Octa

5020
mAh

(Non removable)

vs
02PointsSamsung Galaxy A21s (SM-A217F/DS 64GB/4GB)Compare Xiaomi Redmi Note 9 X
Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
6.5"
PLS

720x1600

48
MP

13mp

4GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Xiaomi Redmi Note 9 (128GB/6GB)

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!

Redmi Note 9 (128GB/6GB)14 Advantages Xiaomi Redmi Note 9 (128GB/6GB)vsGalaxy A21s (SM-A217F/DS 64GB/4GB)2 Advantages Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
+6GB LPDDR4X50%
More RAM memory. Typically more responsive and better for multitasking.
vs4GB LPDDR4X
+128GB (106GB available)121%
More internal storage for applications and files
vs64GB (48GB available)
+TFT IPS LCDAdvantage
TFT IPS LCD display is brighter and more vivid
vsTFT PLS
+1080x2340 pixels119%
Higher resolution screen
vs720x1600 pixels
+395 PPI46%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs270 PPI
+6.53"1%
Larger screen
vs6.5"
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+Android 11Advantage
Android 11 is newer and safer
vsAndroid 10
+(4G+ LTE-A) 800 Mbps167%
Faster for surfing the internet and download files
vs(4G+ LTE-A) 300 Mbps
+Ambient Light sensorAdvantage
Sensors help you use the device
vsNot supported
+5020 mAh1%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs5000 mAh
+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.
vs15W
+Gorilla Glass 5Advantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
+Water repellent nano-coating (don't immerse)Advantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
2Ghz 64bit Octa-Corevs+2Ghz 64bit Octa-Core22%
More powerful processor, you can open your applications faster
199 grams (6.97 ounces)vs+192 grams (6.72 ounces)4%
Lighter

38 Common items in both devices
eMMC 5.1
Until 512GB microSD, microSDXC
8.9 millimeters (0.35 inches)
Plastic body, glass front
60Hz
16 million
(quad camera) 48MP + 8MP + 2MP + 2MP
+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 differencesClear highlight
Physical featuresXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
ModelRedmi Note 9 (128GB/6GB)Galaxy A21s (SM-A217F/DS 64GB/4GB)
Other model namesXiaomi Redmi Note 9 M2003J15SC, M2003J15SSGalaxy A21s SM-A217F/Dual-Sim (64GB + 4GB RAM)
Country or region availableChinaIndia
China, India
(Global, International)AngolaSaudi ArabiaEgyptIndiaMoroccoMozambiquePakistan
(Global, International), Angola, Saudi Arabia, Egypt, India, Morocco, Mozambique, Pakistan
BrandXiaomiSamsung
Release dateApril, 2020June, 2020
Depth8.9 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)77.2 x 162.3 millimeters (3.04 x 6.39 in)75.3 x 163.7 millimeters (2.96 x 6.44 in)
Weight199 grams (6.97 ounces)192 grams (6.72 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersWater repellent nano-coating (don't immerse)Not supported
System (OS)Xiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Operating systemAndroid 10Android 10
Firmware updateAndroid 11feature not registered
HardwareXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Chipset64bit - MediaTek Helio G85 (12nm)64bit - Samsung Exynos 850 Octa (8nm)
CPU processorOcta-Core, 2 processors:
2Ghz Dual-Core ARM-Cortex-A75
1.8Ghz Hexa-Core ARM-Cortex-A55
Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A55
2Ghz Quad-Core ARM Cortex-A55
GPU graphical controllerARM Mali-G52 MC2 1GhzARM Mali-G52 MP1
RAM memory6GB LPDDR4X4GB LPDDR4X
Internal storage128GB (106GB available)
eMMC 5.1
64GB (48GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplayXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Display typeTFT IPS LCDTFT PLS
Screen size6.53" inches6.5" inches
Screen-to-body ratio~83.5% (screen-to-body ratio)~82.8% (screen-to-body ratio)
Display resolution1080x2340 pixels (19.5:9)720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)395 PPI270 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 5Not supported
Display features60Hz, 450 nits60Hz
Mobile networksXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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/upload800/150 Mbps300/150 Mbps
Network technology2G, 3G, 4G2G, 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 850/900/1700/1900/2100UMTS 850/900/1900/2100
Primary 4G networkLTE Cat15/13 (Bands 1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (Bands 38, 40, 41)
VoLTE
LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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
CameraXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Back camera (main camera)(quad camera)
48 megapixels
8MP ultrawidef/2.213mm1/4"1.12µm118º
2MP macrof/2.41.75µmAF
2MP depthf/2.41/5"1.7µm
(quad camera)
48 megapixels
8MP ultrawidef/2.21/4"1.12µm123º
2MP macrof/2.4
2MP depthf/2.4
Main camera resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Front camera (secondary)13 megapixels13 megapixels
Front camera resolution4128x3096 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.3 (aperture)f/2.2 (aperture)
Focal length29mm lensfeature not registered
Sensor size1/3.06" inches1/3.1" inches
Pixel size1.12µm pixel1.12µm pixel
MultimediaXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
RadioFMFM
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
ConnectivityXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C reversible connector
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portSupportedNot supported
Other functionsXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Compass
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Forest Green, Midnight Grey, Polar White
- MIUI 11, 12
- 22.5W charger (18W phone support)
- WiFi direct, hotspot
- Colors: Black, White, Blue, Red
- One UI 2.0
- WiFi direct, hotspot
Power supplyXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5020 mAh5000 mAh
Charger, watts18W Fast battery charging
9W Reverse charging USB between devices
15W (9V/1.67A) Fast battery charging
Talk time autonomy1980 minutes | 33 hours | 1.4 daysfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateXiaomi Redmi Note 9 (128GB/6GB)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)0.84W/kg (head) | 0.9W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)0.8W/kg (head) | 1.14W/kg (body)0.422W/kg (head) | 1.544W/kg (body)
X

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