Icemobile Rock vs Karbonn KT21 Express
Icemobile Rock
Karbonn KT21 Express
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Network
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2G networkGSM 850, 900, 1800, 1900GSM
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2011-72014-12
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Status
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Design
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SIMDual SIM (Mini-SIM, dual stand-by)Dual SIM (Mini-SIM)
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Height109.7 mm
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Width46.6 mm
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Thickness15 mm
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Weight
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ColorsBlack, Blue, Purple, Red, YellowBlack
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Display
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Display typeTFTTFT capacitive touchscreen
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Physical size1.77 inches2.8 inches
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Resolution128 x 160 pixels-
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Pixel density116 ppi-
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Display colors66560-
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Hardware
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Memory cardmicroSDmicroSD
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Memory card max2 GB32 GB
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Main camera
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Primary cameraYes-
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Main camera3.15 MP
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Primary camera resolution-2048 x 1536 pixels
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Primary camera videonovideo
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Primary camera flash-LED flash
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration, MP3, polyphonic ringtonesVibration, Polyphonic(64), MP3 ringtones
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Multimedia
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Radio FMStereo FM radioFM radio
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Radio recording-FM recording
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Connectivity
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WLAN
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USBYesYes
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BluetoothYes
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GPSNoNo
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Features
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Messaging SMSSMSSMS
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Messaging MMSMMSMMS
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Messaging Email-Email
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WAPWAP 2.0/xHTML-
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JavaNoYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity800 mAh1000 mAh
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Talk time8 h-
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Standby time580 h-
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Browser
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Browser-Yes