Blackview BV6900 vs vivo X21
Blackview BV6900
vivo X21
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
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3G networkHSDPA 850, 900, 1700, 1900, 2100HSDPA 850, 900, 1900, 2100
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 20, 25, 26, 28, 38, 40, 41, 66LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
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HSPA speed-HSPA
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LTE speedLTE, Cat4, 150 Mbps download, 51 Mbps uploadLTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-042018-3
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Status2020-042018
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Design
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Build-Front glass, aluminum body
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SIMDual SIM (Nano-SIM/Nano-SIM(microSD), dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height164.45 mm154.5 mm
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Width81.4 mm74.8 mm
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Thickness15 mm7.4 mm
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Weight284 g156.2 g
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WaterproofYes, IP68, IP69-
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Dust proofYes, IP68, IP69-
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MIL-STD-810GYes-
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ColorsBlack, Green, OrangeAurora White, Black, Ruby Red
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Display
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Display typeIPS capacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size5.84 inches6.28 inches
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Resolution1080 x 2280 pixels1080 x 2280 pixels
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Pixel density432 ppi402 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, Corning Gorilla Glass 3-
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Multitouch-Yes
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.6 GHz Cortex-A53Quad-core 2.2 GHz Kryo 260
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CPU(second)quad-core 1.69 GHz Cortex-A53quad-core 1.8 GHz Kryo 260
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ChipsetMediaTek Helio P25Qualcomm SDM660 Snapdragon 660
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GPUMali-T880 MP2Adreno 512
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Memory RAM4 GB6 GB
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Internal storage64 GB64, 128 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD(uses second SIM slot)
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Memory card max-256 GB
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StorageeMMC-
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OS
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OSAndroid 9.0 PieAndroid 8.1 (Oreo)
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Main camera
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Camera typeQuadDual
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Main camera16 MP, f/2.012 MP, f/1.8 , 1/2.5" , 1.4 µm
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8 MP, f/2.25 MP, f/2.4
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0.3 MP, f/2.8
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0.3 MP, f/2.8
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Primary camera resolution4608 x 3456 pixels4032 x 3024 pixels
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Primary camera video2160p@30fps1080p@30fps
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Primary camera Autofocus-dual pixel phase detection autofocus
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Primary camera flashdual-LED flashLED 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-modeGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera16 MP, f/2.012 MP, f/2.0
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Selfie camera resolution4608 x 3456 pixels4032 x 3024 pixels
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Selfie camera video1080p@30fps1080p@30fps
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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Notifications-Vibration; MP3, WAV ringtones
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Earpiece-Yes
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHzWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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Wi-Fi displayYes-
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WLAN WiFi Dual BandYesYes
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USBType-C reversible connectormicroUSB 2.0
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USB On-The-GoYesYes
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Bluetoothv4.2v5.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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NFCYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYes-
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BeidouYes-
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging Push Email-Push Email
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SensorsAccelerometer, compass, fingerprint, gyroscope, magnetometer, proximityFingerprint (rear-mounted), accelerometer, compass, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity5580 mAh3200 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes
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Talk time 3G26 h-
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Standby time 3G600 h-
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Cost
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Price200 USD-