Karbonn KT21 Express vs Spice Mi-492 Stellar Virtuoso Pro+
Karbonn KT21 Express
Spice Mi-492 Stellar Virtuoso Pro+
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Network
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2G networkGSMGSM 900, 1800
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3G network-HSDPA 2100
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HSPA+ speed-HSPA+
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122013-9
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Status2013-9
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Design
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SIMDual SIM (Mini-SIM)Dual SIM
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Height133.8 mm
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Width68.2 mm
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Thickness10 mm
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Weight123.3 g
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ColorsBlackBlack, White
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Display
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Display typeTFT capacitive touchscreenCapacitive touchscreen
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Physical size2.8 inches-
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Resolution-480 x 854 pixels
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Hardware
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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 MP5 MP
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Primary camera resolution2048 x 1536 pixels2592 x 1944 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 cameraNo-
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Selfie camera1.3 MP
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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 ringtones
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Multimedia
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Radio FMFM radioFM radio
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Radio recordingFM recording-
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Connectivity
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WLANWi-Fi
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USBYesYes
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BluetoothYesv4.0
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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 Email
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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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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1000 mAh1730 mAh
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Talk time-5 h
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Standby time-350 h
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OS
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OS-Android OS, v4.2 (Jelly Bean)
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