Xiaomi Redmi K40 vs Xiaomi Redmi Note 12 (China)
Xiaomi Redmi K40
Xiaomi Redmi Note 12 (China)
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Network
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2G networkGSM 850, 900, 1800, 1900; CDMA 800GSM 850, 900, 1800, 1900; CDMA 800
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xHSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42LTE frequency band 1, 3, 5, 7, 8, 34, 38, 39, 40, 41
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5G network5G band 1, 3, 28, 41, 77, 78 SA/NSA/Sub65G band 1, 3, 5, 8, 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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EV-DO speed-EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
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LTE speedLTE-A, 1174 Mbps download, 210 Mbps uploadLTE, Cat12, 603 Mbps download, 102 Mbps upload
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GPRSYesYes
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EDGEClass 8Yes
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Availability
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Oficially announced2021-022022-10
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Status2021-032022-11
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Design
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BuildGlass, MetalPlastic, glass
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height163.7 mm165.9 mm
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Width76.4 mm76.2 mm
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Thickness7.8 mm8 mm
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Weight196 g188 g
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Splash resistant-IP53
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Dust proof-IP53
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ColorsAurora, Black, WhiteBlack, Blue, White
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Display
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Display typeSuper AMOLEDSamsung AMOLED
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Physical size6.67 inches6.67 inches
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Resolution1080 x 2400 pixels1080 x 2400 pixels
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Pixel density395 ppi395 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 3D curved glass screen, Corning Gorilla Glass 5Scratch resistant, 2.5D curved glass screen
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Display features120Hz, HDR10+, 1300 nits (peak), sunscreen 3.0, night light screen120Hz, 1200 nits (peak)
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Hardware
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CPUOcta-coreOcta-core
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CPUSingle-core 3.2 GHz Kryo 585Dual-core 2.0 GHz Cortex-A78
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CPU(second)Triple-core 2.42 GHz Kryo 585Hexa-core 1.8 GHz Cortex-A55
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CPU(third)Quad-core 1.80 GHz Kryo 585
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ChipsetQualcomm SM8250-AC Snapdragon 870 5GQualcomm SM4375 Snapdragon 4 Gen 1
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GPUAdreno 650Adreno 619
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Memory RAM6, 8, 12 GB4, 6, 8 GB
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Internal storage128, 256 GB128, 256 GB
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Memory cardNoNo
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StorageUFS 3.1UFS 2.2
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OS
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OSAndroid 11, MIUI 12Android 12, MIUI 13
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Main camera
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Camera typeTripleDual
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Main camera(wide) , 48 MP, f/1.8 , 26 mm, 1/2" , 0.8 µm(wide) , 48 MP, 24 mm, 1/2" , 0.8 µm
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(ultrawide) , 8 MP, f/2.2 , 119˚(depth) , 2 MP, f/2.4
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(macro) , 5 MP, 50 mm, 1/5.0" , 1.12 µm
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Primary camera resolution8000 x 6000 pixels8000 x 6000 pixels
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Primary camera video4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS1080p@30/60fps
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Primary camera flashLED flashdual-LED dual-tone flash
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Camera featuresAutofocus, continuous shooting, digital 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 autofocusAutofocus, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 20 MP, 1/3.4" , 0.8 µm(wide) , 8 MP, 1/4" , 1.12 µm, f/2.0
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Selfie camera resolution5184 x 3880 pixels3264 x 2448 pixels
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Selfie camera featuresFace unlock, HDRFace detection, face unlock, HDR
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Selfie camera video1080p@30fps, 720p@120fps1080p@30/60fps
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Sound
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3.5mm jackNoYes
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LoudspeakerYes, with stereo speakersYes
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EarpieceYesYes
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Multimedia
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RadioNoUnspecified
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11axWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
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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-GoYesYes
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Bluetoothv5.1v5.1
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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InfraredYesYes
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NFCYesNo
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GPSYes, with dual-band A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSSYes-
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NavICYes-
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Features
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SensorsAccelerometer, color spectrum, compass, fingerprint, gyroscope, proximityAccelerometer, 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 capacity4520 mAh5000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingQuick Charge 3.0 (100% in 52 min)Yes, 33W
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Tests and performance
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Antutu673599 (v8)389210 (v9)
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Geekbench(single-core)928 (v5.2)602 (v5.2)
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Geekbench(multi-core)3260 (v5.2)1891 (v5.2)
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Cost
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Price470 USD170 USD