Samsung Galaxy A21s vs Xiaomi Redmi K40S
Samsung Galaxy A21s
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, 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41LTE 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, Cat4, 151 Mbps download, 51 Mbps uploadLTE-A
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-052022-03
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Status2020-062022-03
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Design
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BuildPlasticGlass 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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Height163.7 mm163.2 mm
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Width75.3 mm76 mm
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Thickness8.9 mm7.7 mm
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Weight192 g195 g
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Splash resistant-Yes
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ColorsBlack, Blue, Red, WhiteBlack, Blue, Gray, Green
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Display
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Display typePLS TFT capacitive touchscreenAMOLED
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Physical size6.5 inches6.67 inches
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Resolution720 x 1600 pixels1080 x 2400 pixels
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Pixel density270 ppi395 ppi
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Display colors1677721616777216
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Protection-Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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Display features-120Hz, HDR10+, 1300 nits (peak)
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.0 GHz Cortex-A55Single-core 3.2 GHz Kryo 585
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CPU(second)quad-core 2.0 GHz Cortex-A55Triple-core 2.42 GHz Kryo 585
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CPU(third)Quad-core 1.80 GHz Kryo 585
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ChipsetExynos 850Qualcomm SM8250-AC Snapdragon 870 5G
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GPUMali-G52Adreno 650
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Memory RAM3, 4, 6 GB6, 8, 12 GB
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Internal storage32, 64 GB128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max512 GB-
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Storage-UFS 3.1
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OS
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OSOne UI 2.0(Android 10)Android 12, MIUI 13
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Main camera
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Camera typeQuadTriple
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Main camera48 MP, f/2.0 , 26 mm, 1/2.0" , 0.8 µm48 MP, f/1.8 , 1/2" , 0.8 µm, (wide)
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8 MP, f/2.2 , 1/4.0" , 1.12 µm8 MP, (ultrawide) , 119˚
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2 MP, f/2.42 MP, f/2.4 , (macro)
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2 MP, f/2.4
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Primary camera resolution8000 x 6000 pixels8000 x 6000 pixels
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Primary camera video1080p@30fps4K@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-modeAutofocus, 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 type-Single
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Selfie camera13 MP, f/2.2 , 1/3.1" , 1.12 µm20 MP, (wide)
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Selfie camera resolution4160 x 3120 pixels-
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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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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-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 1.0 reversible connectorType-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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NFCYes (market dependent)Yes
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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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BeidouYes-
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BDS-Yes
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QZSS-Yes
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NavIC-Yes
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Features
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SensorsAccelerometer, fingerprint, geomagnetic, 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 capacity5000 mAh4500 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesQuick Charge 3+, 67W (100% in 38 min)
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Cost
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Price200 USD290 USD
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Multimedia
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Radio-No
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Tests and performance
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Antutu-715000 (v9)
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Geekbench(single-core)-983 (v5.2)
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Geekbench(multi-core)-3362 (v5.2)