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Samsung Galaxy M21s (SM-F415F/DS) vs Xiaomi Redmi Note 9 (128GB Global)

Side by side comparison between Samsung Galaxy M21s vs Xiaomi Redmi Note 9 phones, differences, pros, cons with full specifications. What's the better?

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Compare Xiaomi Redmi Note 9 XSamsung Galaxy M21s (SM-F415F/DS)10Points
Samsung Galaxy M21s (SM-F415F/DS)
6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

64bit Octa

6000
mAh

(Non removable)

vs
07PointsXiaomi Redmi Note 9 (128GB Global)Compare Samsung Galaxy M21s X
Xiaomi Redmi Note 9 (128GB Global)
6.53"
IPS

1080x2340

48
MP

13mp

4GB
RAM

64bit Octa

5020
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!

Galaxy M21s (SM-F415F/DS)10 Advantages Samsung Galaxy M21s (SM-F415F/DS)vsRedmi Note 9 (128GB Global)7 Advantages Xiaomi Redmi Note 9 (128GB Global)
+2.3Ghz 64bit Octa-Core10%
More powerful processor, you can open your applications faster
vs2Ghz 64bit Octa-Core
+UFS 2.1Advantage
Fastest write and read storage.
vseMMC 5.1
+191 grams (6.69 ounces)4%
Lighter
vs199 grams (6.97 ounces)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT IPS LCD
+403 PPI2%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs395 PPI
+(triple camera) 64MP + 8MP + 5MP28%
Higher resolution main camera
vs(quad camera) 48MP + 8MP + 2MP + 2MP
+1/1.72" inches16%
The larger sensor camera lets you take photos with better depth.
vs1/2" inches
+(front) 32MP150%
Higher resolution secondary camera to take pictures and selfies
vs(front) 13MP
+4K UHD (3840x2160)3 times
More image quality for recording videos with the primary camera
vsFull HD (1920x1080)
+6000 mAh20%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs5020 mAh
64GB (49GB available)vs+128GB (106GB available)116%
More internal storage for applications and files
6.4"vs+6.53"2%
Larger screen
(4G+ LTE-A) 300 Mbpsvs+(4G+ LTE-A) 800 Mbps167%
Faster for surfing the internet and download files
Not supportedvs+Proximity sensorAdvantage
Sensors help you use the device
15Wvs+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 supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
Not supportedvs+Water repellent nano-coating (don't immerse)Advantage
Protection against water allows you talk to your friends in the rain, for example

38 Common items in both devices
4GB LPDDR4X
Until 512GB microSD, microSDXC
8.9 millimeters (0.35 inches)
Plastic body, glass front
60Hz
16 million
1080x2340 pixels
+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 featuresSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
ModelGalaxy M21s (SM-F415F/DS)Redmi Note 9 (128GB Global)
Other model namesGalaxy M21s SM-F415F/Dual-Sim (4GB RAM)Xiaomi Redmi Note 9 M2003J15SG Global version (NFC)
Country or region available(Latin America)Brazil
(Latin America), Brazil
(Global, International)
(Global, International)
BrandSamsungXiaomi
Release dateNovember, 2020April, 2020
Depth8.9 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)75.1 x 159.2 millimeters (2.96 x 6.27 in)77.2 x 162.3 millimeters (3.04 x 6.39 in)
Weight191 grams (6.69 ounces)199 grams (6.97 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedWater repellent nano-coating (don't immerse)
System (OS)Samsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Operating systemAndroid 10Android 10
Firmware updateAndroid 11Android 11
HardwareSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Chipset64bit - Samsung Exynos 9 Octa 9611 (10nm)64bit - MediaTek Helio G85 (12nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2Ghz Dual-Core ARM-Cortex-A75
1.8Ghz Hexa-Core ARM-Cortex-A55
GPU graphical controllerARM Mali-G72 MP3ARM Mali-G52 MC2 1Ghz
RAM memory4GB LPDDR4X4GB LPDDR4X
Internal storage64GB (49GB available)
UFS 2.1
128GB (106GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Display typeSuper AMOLEDTFT IPS LCD
Screen size6.4" inches6.53" inches
Screen-to-body ratio~84.1% (screen-to-body ratio)~83.5% (screen-to-body ratio)
Display resolution1080x2340 pixels (19.5:9)1080x2340 pixels (19.5:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)403 PPI395 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Gorilla Glass 5
Display features60Hz, 420 nits60Hz, 450 nits
Mobile networksSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
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/upload300/50 Mbps800/150 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 850/900/1700/1900/2100
Primary 4G networkLTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat15/13 (Bands 1, 2, 3, 4, 5, 7, 8, 20, 28)
TD-LTE (Bands 38, 40, 41)
VoLTE
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
CallingSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
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
CameraSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Back camera (main camera)(triple camera)
64 megapixels
8MP ultrawidef/2.2123º12mm1/4"1.12µm
5MP depthf/2.2
(quad camera)
48 megapixels
8MP ultrawidef/2.213mm1/4"1.12µm118º
2MP macrof/2.41.75µmAF
2MP depthf/2.41/5"1.7µm
Main camera resolution10120x6328 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/1.8 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.72" 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 cameraSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Front camera (secondary)32 megapixels13 megapixels
Front camera resolution6528x4896 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.3 (aperture)
Focal length26mm lens29mm lens
Sensor size1/2.8" inches1/3.06" inches
Pixel size0.8µm pixel1.12µm pixel
MultimediaSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
RadioFM (RDS)FM
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
ConnectivitySamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
USBUSB 2.0 Type-C reversible connectorUSB 2.0 Type-C, USB OTG On-The-Go
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 supportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedSupported
Other functionsSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Black, Blue
- One UI 2.5, 3.1
- Stereo sound not supported
- DeX not supported
- WiFi direct, hotspot
- Colors: Forest Green, Midnight Grey, Polar White
- MIUI 11, 12
- 22.5W charger (18W phone support)
- WiFi direct, hotspot
Power supplySamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity6000 mAh5020 mAh
Charger, watts15W Fast battery charging18W Fast battery charging
9W Reverse charging USB between devices
Talk time autonomy2880 minutes | 48 hours | 2 days1980 minutes | 33 hours | 1.4 days
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy M21s (SM-F415F/DS)Xiaomi Redmi Note 9 (128GB Global)
SAR 1.6W/kg (USA, Mexico, etc.)0.383W/kg (head)0.84W/kg (head) | 0.9W/kg (body)
SAR 2W/kg (Europe, UK, etc.)feature not registered0.8W/kg (head) | 1.14W/kg (body)
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