Samsung Galaxy M21s vs Xiaomi Redmi K40S
Samsung Galaxy M21s
Xiaomi Redmi K40S
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66LTE frequency band 1, 2, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
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5G network-5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTE-A, 603 Mbps download, 150 Mbps uploadLTE-A
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-112022-03
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Status2020-112022-03
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Design
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BuildGlass front (Gorilla Glass 3), plastic back, plastic frameGlass front (Gorilla Glass 5), plastic back
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SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height159.2 mm163.2 mm
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Width75.1 mm76 mm
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Thickness8.9 mm7.7 mm
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Weight191 g195 g
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Splash resistant-Yes
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ColorsBlack, BlueBlack, Blue, Gray, Green
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Display
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Display typeSuper AMOLEDAMOLED
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Physical size6.4 inches6.67 inches
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Resolution1080 x 2340 pixels1080 x 2400 pixels
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Pixel density403 ppi395 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen, Corning Gorilla Glass 3Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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Display features420 nits (typ), Infinity U Display120Hz, HDR10+, 1300 nits (peak)
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A73Single-core 3.2 GHz Kryo 585
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CPU(second)quad-core 1.7 GHz Cortex-A53Triple-core 2.42 GHz Kryo 585
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CPU(third)Quad-core 1.80 GHz Kryo 585
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ChipsetExynos 9611Qualcomm SM8250-AC Snapdragon 870 5G
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GPUMali-G72 MP3Adreno 650
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Memory RAM4, 6 GB6, 8, 12 GB
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Internal storage64, 128 GB128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max512 GB-
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StorageUFS 2.1UFS 3.1
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OS
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OSAndroid 10, One UI 2.5Android 12, MIUI 13
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Main camera
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Camera typeTripleTriple
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Main camera(wide) , 64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm(wide) , 48 MP, f/1.8 , 1/2" , 0.8 µm
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(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm(ultrawide) , 8 MP, 119˚
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(depth) , 5 MP, f/2.2(macro) , 2 MP, f/2.4
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Primary camera resolution9280 x 6920 pixels8000 x 6000 pixels
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Primary camera video4K@30fps, 1080p@30fps, gyro-EIS4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS
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Primary camera flashLED flashdual-LED dual-tone flash
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Camera featuresAutofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocusAutofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 32 MP, f/2.0 , 26 mm, 1/2.8" , 0.8 µm(wide) , 20 MP
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Selfie camera features-Face unlock, HDR
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Selfie camera video1080p@30fps1080p@30/120fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes, with stereo speakers
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EarpieceYesYes
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Multimedia
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RadioFM RadioNo
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11acWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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WLAN WiFi Dual BandYesYes
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USBType-C 2.0Type-C 2.0
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USB On-The-Go-Yes
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Bluetoothv5.0v5.2
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFCNoYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSS-Yes
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NavIC-Yes
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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, color spectrum, compass, fingerprint, gyroscope, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Po
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Battery capacity6000 mAh4500 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingFast ChargingQuick Charge 3+, 67W (100% in 38 min)
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Tests and performance
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Antutu186200 (v8)715000 (v9)
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Geekbench(single-core)-983 (v5.2)
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Geekbench(multi-core)-3362 (v5.2)
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Cost
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Price280 USD290 USD