Allview A4 Duo vs Celkon CT 9
Allview A4 Duo
Celkon CT 9
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Network
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2G networkGSM 900, 1800
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3G networkHSDPA 900, 2100-
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2013-112012-12
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Status2013-112012-12
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Design
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SIMDual SIM (dual stand-by)No
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Height116.1 mm239 mm
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Width63.2 mm146 mm
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Thickness12 mm13 mm
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Weight110.6 g450 g
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ColorsBlackWhite/Black
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size3.5 inches9.0 inches
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Resolution320 x 480 pixels480 x 800 pixels
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Pixel density165 ppi104 ppi
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Hardware
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CPUDual-core 1 GHz ARM Cortex-A71.2 GHz ARM Cortex-A9
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GPUMali-400-
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Memory RAM512 MB-
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Memory cardmicroSD
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Memory card max-32 GB
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OS
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OSAndroid OS, v4.2 (Jelly Bean)Android OS, v4.0 (Ice Cream Sandwich)
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Main camera
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Main camera2 MP
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Primary camera-Yes
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Primary camera resolution1600 x 1200 pixels-
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Primary camera videovideovideo
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, MP3, WAV ringtonesN/A
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Multimedia
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Radio-No
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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
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WLAN WiFi HotspotYes-
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WLAN WiFi DirectYes-
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USBmicroUSB 2.0Yes
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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Bluetooth EDRYes-
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Infrared-Yes
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GPSNoNo
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Features
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Messaging SMSSMS(threaded view)-
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Messaging MMSMMS-
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLYesYes
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Adobe Flash-Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1200 mAh5000 mAh
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Battery removable-Non-removable
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Talk time8 h 20 min3 h
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Standby time200 h100 h
