Xiaomi Redmi K40 vs vivo iQOO Z7i
Xiaomi Redmi K40
vivo iQOO Z7i
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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, 2100; CDMA2000 1x
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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, 8, 28, 34, 38, 39, 40, 41
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5G network5G band 1, 3, 28, 41, 77, 78 SA/NSA/Sub65G band 1, 5, 8, 28, 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, 391 Mbps download, 150 Mbps upload
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GPRSYesYes
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EDGEClass 8Yes
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Availability
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Oficially announced2021-022023-03
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Status2021-032023-03
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Design
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BuildGlass, MetalGlass front, plastic frame, plastic back
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SIMDual SIM (Nano-SIM, dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height163.7 mm164.1 mm
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Width76.4 mm75.6 mm
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Thickness7.8 mm8.2 mm
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Weight196 g186 g
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ColorsAurora, Black, WhiteBlack, Blue
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Display
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Display typeSuper AMOLEDIPS LCD
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Physical size6.67 inches6.51 inches
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Resolution1080 x 2400 pixels720 x 1600 pixels
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Pixel density395 ppi270 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 3D curved glass screen, Corning Gorilla Glass 5-
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Display features120Hz, 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 585Dual-core 2.2 GHz Cortex-A76
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CPU(second)Triple-core 2.42 GHz Kryo 585Hexa-core 2.0 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 5GMediatek Dimensity 6020
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GPUAdreno 650Mali-G57 MC2
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Memory RAM6, 8, 12 GB4, 6, 8 GB
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Internal storage128, 256 GB128 GB
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Memory cardNomicroSD, microSDHC, microSDXC
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Memory card max-1 TB
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StorageUFS 3.1UFS 2.2
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OS
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OSAndroid 11, MIUI 12Android 13, Origin OS Ocean
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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) , 13 MP, f/2.2 , 10x digital zoom
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(ultrawide) , 8 MP, f/2.2 , 119˚(macro) , 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 pixels4160 x 3120 pixels
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Primary camera video4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS1080p@30fps
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Primary camera flashLED flashLED 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, continuous shooting, 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) , 5 MP, f/1.8
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Selfie camera resolution5184 x 3880 pixels2560 x 1944 pixels
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Selfie camera featuresFace unlock, HDR-
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Selfie camera video1080p@30fps, 720p@120fps1080p@30fps
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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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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
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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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Bluetooth AptX-aptX HD
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InfraredYes-
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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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QZSSYesYes
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NavICYes-
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Features
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SensorsAccelerometer, color spectrum, compass, fingerprint, gyroscope, proximityAccelerometer, compass, fingerprint, 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)Vivo Super FlashCharge, 15W
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Tests and performance
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Antutu673599 (v8)330000 (v9)
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Geekbench(single-core)928 (v5.2)611 (v5.2)
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Geekbench(multi-core)3260 (v5.2)1893 (v5.2)
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Cost
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Price470 USD140 USD