Xiaomi Black Shark 4 vs Xiaomi Redmi K40
Xiaomi Black Shark 4
Xiaomi Redmi K40
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Network
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2G networkGSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMAGSM 850, 900, 1800, 1900; CDMA 800
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3G networkHSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DOHSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41LTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42
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5G network5G band 1, 3, 8, 28, 41, 77, 78, 79 SA/NSA5G band 1, 3, 28, 41, 77, 78 SA/NSA/Sub6
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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 speedEV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload-
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LTE speedLTE-ALTE-A, 1174 Mbps download, 210 Mbps upload
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GPRSYesYes
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EDGEYesClass 8
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Availability
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Oficially announced2021-032021-02
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Status2021-032021-03
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Design
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BuildAluminium alloy, glassGlass, Metal
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height163.8 mm163.7 mm
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Width76.4 mm76.4 mm
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Thickness9.9 mm7.8 mm
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Weight210 g196 g
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Build featuresPhysical pop-up gaming triggers-
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ColorsBlack, Blue, Magic Black, SilverAurora, Black, White
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Display
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Display typeSuper AMOLEDSuper 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 resistantScratch resistant, 3D curved glass screen, Corning Gorilla Glass 5
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Display featuresAlways-on display, 144Hz, HDR10+, 1300 nits (peak)120Hz, HDR10+, 1300 nits (peak), sunscreen 3.0, night light screen
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Hardware
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CPUOcta-coreOcta-core
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CPUSingle-core 3.2 GHz Kryo 585Single-core 3.2 GHz Kryo 585
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CPU(second)Triple-core 2.42 GHz Kryo 585Triple-core 2.42 GHz Kryo 585
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CPU(third)Quad-core 1.80 GHz Kryo 585Quad-core 1.80 GHz Kryo 585
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ChipsetQualcomm SM8250-AC Snapdragon 870 5GQualcomm SM8250-AC Snapdragon 870 5G
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GPUAdreno 650Adreno 650
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Memory RAM6, 8, 12 GB6, 8, 12 GB
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Internal storage128, 256 GB128, 256 GB
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Memory cardNoNo
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StorageUFS 3.1UFS 3.1
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OS
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OSAndroid 11, Joy UI 12.5Android 11, MIUI 12
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Main camera
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Camera typeTripleTriple
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Main camera(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm(wide) , 48 MP, f/1.8 , 1/2" , 0.8 µm, 26 mm
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(ultrawide) , 8 MP, f/2.2 , 120˚ , 1/4.0" , 1.12 µm(ultrawide) , 8 MP, f/2.2 , 119˚
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(macro) , 5 MP, f/2.4(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@30/60fps, 1080p@30/60/240fps, 1080p@960fps4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, continuous shooting, digital zoom, optical 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 autofocusAutofocus, 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 autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 20 MP, f/2.0 , 0.8 µm(wide) , 20 MP, 0.8 µm, 1/3.4"
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Selfie camera resolution5184 x 3880 pixels5184 x 3880 pixels
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Selfie camera featuresHDRFace unlock, HDR
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Selfie camera video1080p@30fps1080p@30fps, 720p@120fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYes, with stereo speakersYes, with stereo speakers
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EarpieceYesYes
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Multimedia
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RadioNoNo
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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, 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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Bluetoothv5.2v5.1
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth AptXaptX HD, aptX Adaptive-
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Infrared-Yes
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NFCYesYes
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GPSYes, with A-GPSYes, with dual-band A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSSYesYes
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NavIC-Yes
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Features
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SensorsAccelerometer, barometer, 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 capacity4500 mAh4520 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingQuick Charge (100% in 17 min)Quick Charge 3.0 (100% in 52 min)
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Tests and performance
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Antutu640000 (v8)673599 (v8)
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Geekbench(single-core)1009 (v5.2)928 (v5.2)
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Geekbench(multi-core)3329 (v5.2)3260 (v5.2)
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Cost
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Price380 USD470 USD