Oppo A1 2018 vs Sigma Mobile X-style Tab A83
Oppo A1 2018
Sigma Mobile X-style Tab A83
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 900, 2100
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4G networkLTE-
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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LTE speedLTE-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-32019-1
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Status2018-42019-1
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Design
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BuildMetalPlastic, metal
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SIMDual SIM (Nano-SIM, dual stand-by)Micro-SIM
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Height150.5 mm123 mm
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Width73.1 mm207 mm
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Thickness7.7 mm9 mm
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Weight143 g360 g
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ColorsBlue, Red, WhiteBlack, Gray
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Display
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Display typeS-IPS LCD capacitive touchscreenIPS capacitive touchscreen
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Physical size5.7 inches8 inches
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Resolution720 x 1440 pixels1280 x 800 pixels
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Pixel density282 ppi189 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen-
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.3 GHz Cortex-A7
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Chipset-Mediatek MT8321
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GPU-Mali-400 MP2
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Memory RAM4 GB2 GB
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Internal storage64 GB16 GB
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Memory cardmicroSDmicroSD, microSDHC, microSDXC
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Memory card max128 GB32 GB
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OS
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OSAndroid 7.1 (Nougat)Android 8.1 Oreo
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Main camera
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Camera type-Single
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Main camera13 MP, f/2.2 , 1/3" , 1.12 µm5 MP
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Primary camera resolution4160 x 3120 pixels2592 x 1944 pixels
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Primary camera video1080p@30fps720p@30fps
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Primary camera Autofocusautofocus-
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Primary camera flash-LED flash
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Camera featuresGeo-tagging, HDR, face detection, panorama, touch focusContinuous 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 camera8 MP2 MP
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Selfie camera resolution3264 x 2448 pixels1600 x 1200 pixels
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Selfie camera video1080p@30fps480p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtones-
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EarpieceYesYes
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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 DirectYesYes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.2v4.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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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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Messaging SMSSMS(threaded view)-
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging Push EmailPush Email-
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SensorsAccelerometer, proximityAccelerometer, proximity, light
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity3180 mAh4000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingVOOC-
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