Celkon A66 vs Karbonn A4
Celkon A66
Karbonn A4
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Network
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2G networkGSM 900, 1800GSM 850, 1900
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3G network-HSDPA 900, 2100
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HSDPA speed-HSDPA
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HSUPA speed-HSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Status2013-3
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Oficially announced2014-122013-3
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Design
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SIMDual SIMDual SIM (Mini-SIM)
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Height136 mm124.8 mm
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Width67.2 mm66 mm
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Thickness11 mm9.5 mm
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Weight98 g75 g
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ColorsBlack, WhiteWhite/Black
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size4.5 inches4.0 inches
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Resolution480 x 854 pixels320 x 480 pixels
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Pixel density218 ppi144 ppi
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Display colors-262144
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Hardware
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CPUDual-core 1.2 GHz
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Memory RAM512 MB-
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Internal storage4 GB256, 512 MB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSAndroid OS, v4.1.2 (Jelly Bean)Android OS, v2.3.6 (Gingerbread)
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Main camera
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Main camera3.15 MP3.15 MP
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Primary camera resolution2048 x 1536 pixels2048 x 1536 pixels
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Primary camera videovideovideo
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Primary camera flashLED flash-
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Selfie camera
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Secondary cameraVGA cameraYes
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic, MP3 ringtonesVibration, MP3, WAV ringtones
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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WLAN WiFi HotspotYesYes
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USBYesYes
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BluetoothYesYes
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GPSYesNo
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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JavaNoYes, via Java MIDP emulator
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Browser
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HTMLYesYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity2000 mAh1400 mAh
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Talk time5 h4 h 20 min
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Standby time160 h250 h
