Acer Iconia Tab A3-A20FHD vs Oppo R821T FInd Muse
Acer Iconia Tab A3-A20FHD
Oppo R821T FInd Muse
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Network
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2G networkGSM 850, 900, 1800, 1900
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3G network-HSDPA 2100
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HSDPA speed-HSDPA
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HSUPA speed-HSUPA
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2014-102014-12
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Status2014-102014-12
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Design
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SIMNoDual SIM (Mini-SIM, dual stand-by)
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Height256.5 mm123 mm
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Width170.2 mm63.5 mm
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Thickness10.2 mm9.9 mm
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Weight508 g
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ColorsBlack, WhiteWhite
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Display
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Display typeLED-backlit IPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size10.1 inches4.0 inches
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Resolution1920 x 1200 pixels480 x 800 pixels
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Pixel density224 ppi233 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.5 GHz ARM Cortex-A7Dual-core 1.2 GHz ARM Cortex-A7
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ChipsetMediatek MT8127Mediatek MT6572
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GPUMali-450MP4Mali-400
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Memory RAM2 GB512 MB
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Internal storage32 GB4 GB
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Memory cardmicroSDmicroSD
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Memory card max128 GB32 GB
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OS
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OSAndroid OS, v4.4 (KitKat)Android OS, v4.2 (Jelly Bean)
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Main camera
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Main camera5 MP3.15 MP
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Primary camera resolution2592 x 1944 pixels2048 x 1536 pixels
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Primary camera video1080pvideo
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Camera featuresGeo-tagging-
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Selfie camera
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Secondary camera-VGA camera
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Selfie camera2 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYes, with stereo speakersYes
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NotificationsMP3, WAV ringtonesVibration, MP3, WAV ringtones
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Multimedia
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RadioNo-
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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
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WLAN WiFi HotspotYesYes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0Yes
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GPS-Yes, with A-GPS
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIM-
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Messaging Push EmailPush EmailPush Email
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer-
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity5910 mAh1700 mAh
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Battery removableNon-removable-
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Talk time8 h-
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Standby time--
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