Digma Optima Prime 4 3G vs Plum Ram 9
Digma Optima Prime 4 3G
Plum Ram 9
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 1900HSDPA 850, 900, 1900, 2100
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4G network-LTE frequency band 1, 3, 5, 7, 8, 20, 28, 38, 40
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HSDPA speed-21.1 Mbps
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HSUPA speed-5.76 Mbps
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LTE speed-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-42020-02
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Status2018-42020-04
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Design
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BuildPlastic-
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SIMDual SIM (Micro-SIM/Mini-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height107.8 mm133.4 mm
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Width188 mm64.4 mm
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Thickness10 mm15.8 mm
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Weight270 g109 g
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Waterproof-IP68 (1.5m and 30 mins)
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Dust proof-IP68
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Flashlight-Yes
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ColorsBlackBlack, Black/Orange
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Display
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Display typeTNTFT
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Physical size7 inches2.4 inches
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Resolution1024 x 600 pixels240 x 320 pixels
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Pixel density170 ppi167 ppi
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Display colors16777216262144
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MultitouchYes-
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Hardware
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CPUQuad-core 1.2 GHz Cortex-A7Dual-core
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ChipsetSpreadtrum SC7731CMediatek MT6572M
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GPUMali-400 MP1-
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Memory RAM1 GB512 MB
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Internal storage8 GB4 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB-
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OS
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OSAndroid 7.0 NougatKaiOS
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Selfie camera
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Selfie camera type-Single
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Selfie camera0.31 MP1.3 MP
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Selfie camera resolution640 x 480 pixels-
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Selfie camera video480p@30fps MP-
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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EarpieceYes-
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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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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYes-
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NFC-No
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometer-
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Browser
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HTMLHTML5-
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2200 mAh1700 mAh
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Battery removableNon-removableRemovable
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Main camera
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Camera type-Single
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Main camera5 MP
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Primary camera video-480p
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Primary camera flash-LED flash
