Digma Optima 1025N 4G vs Sigma Mobile X-style Tab A83
Digma Optima 1025N 4G
Sigma Mobile X-style Tab A83
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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 networkLTE frequency band 1(2100), 3(1800), 7(2600)-
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LTE speedLTE, 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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Oficially announced2018-42019-1
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Status2018-42019-1
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Design
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BuildPlasticPlastic, metal
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SIMDual SIM (Micro-SIM)Micro-SIM
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Height172 mm123 mm
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Width244 mm207 mm
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Thickness9.2 mm9 mm
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Weight520 g360 g
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ColorsBlack, WhiteBlack, Gray
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Display
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Display typeIPSIPS capacitive touchscreen
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Physical size10.1 inches8 inches
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Resolution1280 x 800 pixels1280 x 800 pixels
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Pixel density149 ppi189 ppi
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Display colors1677721616777216
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.0 GHz ARM Cortex-A53Quad-core 1.3 GHz Cortex-A7
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ChipsetMediaTek MT8735VMediatek MT8321
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GPUMali-T720 MP2Mali-400 MP2
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Memory RAM2 GB2 GB
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Internal storage16 GB16 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB32 GB
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OS
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OSAndroid 7.0 NougatAndroid 8.1 Oreo
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Main camera
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Camera type-Single
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Main camera2 MP5 MP
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Primary camera resolution1600 x 1200 pixels2592 x 1944 pixels
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Primary camera video720p@30fps720p@30fps
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Primary camera flashLEDLED flash
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Camera featuresAutofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, scene modeContinuous shooting, digital zoom, geotagging, panorama, HDR, 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 MP2 MP
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Selfie camera resolution640 x 480 pixels1600 x 1200 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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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 HotspotYesYes
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WLAN WiFi Direct-Yes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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Bluetooth EDR-Yes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometerAccelerometer, proximity, light
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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 capacity5000 mAh4000 mAh
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Battery removableNon-removableNon-removable