Alcatel OT-668 vs Karbonn A4
Alcatel OT-668
Karbonn A4
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Network
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2G networkGSM 850, 1900GSM 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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EDGEYes
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Availability
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Oficially announced2012-82013-3
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Status2012-82013-3
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height92.5 mm124.8 mm
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Width46 mm66 mm
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Thickness17.2 mm9.5 mm
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Weight76 g75 g
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ColorsAubergine, Black, Cherry RedWhite/Black
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Display
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Display typeTFTTFT capacitive touchscreen
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Physical size1.77 inches4.0 inches
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Resolution128 x 160 pixels320 x 480 pixels
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Pixel density116 ppi144 ppi
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Display colors262144262144
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Hardware
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CPU104 MHz
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Internal storage2 MB256, 512 MB
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Memory cardmicroSDmicroSD
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Memory card max8 GB32 GB
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Main camera
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Main camera2 MP3.15 MP
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Primary camera resolution1600 x 1200 pixels2048 x 1536 pixels
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Primary camera videovideovideo
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Selfie camera
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Secondary cameraNoYes
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic(64), MP3 ringtonesVibration, MP3, WAV ringtones
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Multimedia
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Radio FMStereo FM radio with RDSFM radio
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Connectivity
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WLANWi-Fi
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WLAN WiFi Hotspot-Yes
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USBmicroUSB 2.0Yes
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Bluetoothv2.1Yes
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Bluetooth A2DPYes-
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GPSNoNo
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IM-IM
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WAPWAP 2.0/xHTML-
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JavaYesYes, via Java MIDP emulator
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity650 mAh1400 mAh
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Talk time6 h4 h 20 min
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Standby time400 h250 h
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OS
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OS-Android OS, v2.3.6 (Gingerbread)
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Browser
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HTML-Yes
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