Karbonn KT21 Express vs Samsung Exhibit II 4G T679
Karbonn KT21 Express
Samsung Exhibit II 4G T679
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Network
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2G networkGSMGSM 850, 900, 1800, 1900
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3G network-HSDPA 850, 1700, 2100 , 1900
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HSDPA speed-HSDPA, 14.4 Mbps
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HSUPA speed-HSUPA, 5.76 Mbps
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122011-10
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Status2011-10
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Design
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SIMDual SIM (Mini-SIM)Mini-SIM
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Height115 mm
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Width60 mm
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Thickness11 mm
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Weight116 g
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ColorsBlackBlack
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size2.8 inches3.7 inches
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Resolution-480 x 800 pixels
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Pixel density-252 ppi
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Display colors-16777216
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Hardware
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CPU1 GHz Scorpion
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Chipset-Qualcomm MSM8255 Snapdragon
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GPU-Adreno 205
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Memory ROM-1 GB
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Memory RAM-512 MB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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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 videovideo480p
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Primary camera Autofocus-autofocus
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Primary camera flashLED flashLED flash
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Selfie camera
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Secondary cameraNoVGA camera
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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 FMFM radio-
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Radio recordingFM recording-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Dual Band-Yes
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USBYesmicroUSB 2.0
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BluetoothYesv3.0
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Bluetooth A2DP-Yes
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GPSNoYes, with A-GPS
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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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Messaging Push Email-Push Mail
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JavaYesYes, via Java MIDP emulator
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Browser
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HTML-Yes
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BrowserYes-
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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 capacity1000 mAh1500 mAh
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Talk time-5 h 30 min
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Standby time-360 h
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OS
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OS-Android OS, v2.3.5 (Gingerbread)
