Digma Optima Prime 4 3G vs Energizer Energy E551S
Digma Optima Prime 4 3G
Energizer Energy E551S
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 1900HSDPA 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800), 28(700)
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HSDPA speed-42.2 Mbps
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HSUPA speed-11.5 Mbps
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesClass 12
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EDGEYesClass 12
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Availability
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Oficially announced2018-42019-2
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Status2018-42019-2
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Design
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BuildPlasticPlastic
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SIMDual SIM (Micro-SIM/Mini-SIM, dual stand-by)Hybrid Dual SIM (Micro-SIM/Nano-SIM, dual stand-by)
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Height107.8 mm-
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Width188 mm-
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Thickness10 mm-
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Weight270 g-
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ColorsBlackBlack
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Display
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Display typeTNTFT capacitive touchscreen
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Physical size7 inches5.5 inches
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Resolution1024 x 600 pixels480 x 854 pixels
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Pixel density170 ppi178 ppi
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Display colors1677721616777216
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Protection-Scratch resistant
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.2 GHz Cortex-A7Quad-core 1.25 GHz Cortex-A53
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ChipsetSpreadtrum SC7731CMediatek MT6737M
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GPUMali-400 MP1Mali-T720MP2
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Memory RAM1 GB1 GB
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Internal storage8 GB8 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB64 GB
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OS
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OSAndroid 7.0 NougatAndroid 8.0 Oreo Go Edition
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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 MP-
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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 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 Hotspot-Yes
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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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bluetooth LE-Yes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometerAccelerometer
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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 mAh2500 mAh
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Battery removableNon-removable-
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Main camera
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Main camera8 MP
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Primary camera resolution-3264 x 2448 pixels
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Primary camera video-720p@30fps
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Primary camera flash-LED flash
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Camera features-Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, scene-mode
