Blackview A20 vs Bravis NB851
Blackview A20
Bravis NB851
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 900, 2100
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HSDPA speed21 Mbps21 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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GPRSYesYes
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EDGEYes-
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Availability
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Oficially announced2018-42018-10
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Status2018-42018-10
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Design
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BuildPlasticPlastic
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (dual stand-by)
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Height146.7 mm122.8 mm
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Width70.7 mm206.5 mm
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Thickness9.6 mm7.7 mm
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Weight170 g332 g
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ColorsBlack, Gold, GrayBlack
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Display
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Display typeIPS capacitive touchscreenIPS capacitive touchscreen
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Physical size5.5 inches8 inches
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Resolution480 x 960 pixels1280 x 800 pixels
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Pixel density195 ppi189 ppi
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Display colors1677721616777216
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ProtectionScratch resistant-
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.3 GHz Cortex-A7Quad-core 1.3 GHz Cortex-A7
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ChipsetMediatek MT6580MMediatek MT8321
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GPUMali-400 MP2Mali-400 MP2
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Memory RAM1 GB1 GB
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Internal storage8 GB16 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max32 GB32 GB
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OS
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OSAndroid OS, v8.0 Oreo Go EditionAndroid 8.1 Oreo
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Main camera
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Camera typeDualSingle
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Main camera5 MP, f/2.02 MP
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0.3 MP
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Primary camera resolution2592 x 1944 pixels1600 x 1200 pixels
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Primary camera video720p@30fps720p@30fps
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Primary camera flashLED 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-modeContinuous shooting, digital zoom, geotagging, panorama, HDR, face detection, white balance settings, ISO settings, self-timer
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Selfie camera
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Selfie camera2 MP, f/2.80.3 MP
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Selfie camera resolution1600 x 1200 pixels640 x 480 pixels
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Selfie camera video480p@30fps480p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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Earpiece-Yes
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Multimedia
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Radio-FM Radio
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometer, light, proximityAccelerometer
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity3000 mAh4000 mAh
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Battery removableRemovableNon-removable
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Talk time 2G10 h-
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Talk time 3G10 h-
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Standby time 2G240 h-
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Standby time 3G240 h-
