Allview V4 Viper vs Blackview OSCAL C20
Allview V4 Viper
Blackview OSCAL C20
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkW-CDMA 900, 2100HSDPA 900, 2100
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4G networkLTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800), 38(2600)-
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HSDPA speed42.2 Mbps21.1 Mbps
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HSUPA speed11.5 Mbps5.76 Mbps
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LTE speedLTE Cat 4, 150 Mbps download, 50 Mbps upload-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2019-92021-07
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Status2019-92021-07
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Design
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Build-Plastic
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SIMDual SIM (Nano-SIM, dual SIM stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height145.8 mm155.4 mm
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Width70.9 mm73.3 mm
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Thickness8.5 mm9.75 mm
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Weight138 g152 g
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ColorsBlue, RedBlack, Blue, Green, Purple
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Display
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Display typeIPS capacitive touchscreenIPS TFT
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Physical size5.7 inches6.09 inches
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Resolution720 x 1520 pixels720 x 1560 pixels
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Pixel density295 ppi282 ppi
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Display colors1677721616777216
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Protection-2.5D curved glass screen
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MultitouchYes-
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Hardware
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CPUQuad-core 2.0 GHz Cortex-A53Quad-core 1.3 GHz Cortex-A7
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ChipsetMediatek MT6761 Helio A22Unisoc SC7731E
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GPUPowerVR GE8320Mali-820 MP1
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Memory RAM2 GB1 GB
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Internal storage16 GB32 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max128 GB128 GB
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Storage-eMMC 5.0
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OS
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OSAndroid 9.0 PieDoke OS 2.0 (Android 11 Go Edition)
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Main camera
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Camera typeDualSingle
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Main camera8 MP5 MP, f/2.0
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0.3 MP
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Primary camera resolution-2560 x 1944 pixels
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Primary camera video1080p@30fps1080p@30fps
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Primary camera flashLED flashLED flash
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Camera features-Autofocus, continuous shooting, digital zoom, geotagging, panorama, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode
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Selfie camera
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Selfie camera type-Single
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Selfie camera5 MP2 MP
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Selfie camera resolution-1920 x 1080 pixels
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Selfie camera features-Face unlock
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Selfie camera video-720p@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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RadioFM RadioFM 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 HotspotYesYes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.1v4.2
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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NFC-No
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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BDS-Yes
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Features
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SensorsAccelerometer, fingerprint, proximityAccelerometer, light, 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 capacity2700 mAh3380 mAh
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Battery removableNon-removableNon-removable
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Cost
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Price110 USD70 USD
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Tests and performance
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Antutu-23006 (v8)
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Geekbench(single-core)-59 (v5.2)
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Geekbench(multi-core)-185 (v5.2)
