Digma Optima 8027 3G vs Vertex Impress Bear
Digma Optima 8027 3G
Vertex Impress Bear
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 900, 2100
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4G network-LTE frequency band 3(1800), 7(2600), 18(800)
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LTE speed-LTE, Cat4, 150 Mbps download, 51 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Status2019-42018-6
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Oficially announced2019-42018-6
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Design
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BuildPlasticPlastic
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SIMDual SIM (Micro-SIM/Mini-SIM, dual stand-by)Dual SIM (Micro-SIM, dual stand-by)
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Height123 mm143 mm
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Width208 mm72 mm
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Thickness10 mm10.3 mm
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Weight320 g147 g
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ColorsBlackBlack, Blue, Gold
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Display
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Display typeIPSIPS
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Physical size8 inches5 inches
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Resolution1280 x 800 pixels720 x 1280 pixels
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Pixel density189 ppi294 ppi
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Display colors1677721616777216
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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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ChipsetSpreadtrum SC7731ESpreadtrum SC9832
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GPUMali-T820 MP1Mali-400 MP2
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Memory RAM1 GB1 GB
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Internal storage16 GB8 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC
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Memory card max128 GB32 GB
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OS
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OSAndroid 8.1 Oreo Go EditionAndroid 7.0 Nougat
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Main camera
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Main camera2 MP8 MP
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Primary camera resolution1600 x 1200 pixels3264 x 2448 pixels
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Primary camera video720p@30fps720p@30fps
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Primary camera flash-LED flash
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Camera featuresContinuous shooting, digital zoom, geotagging, HDR, white balance settings, scene modeAutofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, 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 camera0.31 MP5 MP
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Selfie camera resolution640 x 480 pixels2560 x 1920 pixels
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Selfie camera video480p@30fps MP480p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioFM Radio-
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Radio FM-FM 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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WLAN WiFi Direct-Yes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.2v4.0
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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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SensorsAccelerometerAccelerometer, light, 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 capacity3500 mAh2200 mAh
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Battery removableNon-removableRemovable
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Talk time 2G-8 h
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Talk time 3G-8 h
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Standby time 2G-240 h
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Standby time 3G-240 h