Karbonn KT21 Express vs Philips X331
Karbonn KT21 Express
Philips X331
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Network
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2G networkGSMGSM 900, 1800, 1900
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122012-6
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Status2012-6
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM)
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Height108 mm
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Width57.5 mm
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Thickness14.4 mm
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Weight107.7 g
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ColorsBlackBlack
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Display
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Display typeTFT capacitive touchscreenTFT resistive touchscreen
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Physical size2.8 inches2.8 inches
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Resolution-240 x 320 pixels
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Pixel density-143 ppi
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Display colors-262144
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Hardware
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Internal storage-44 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 MP2 MP
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Primary camera resolution2048 x 1536 pixels1600 x 1200 pixels
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Primary camera videovideoQCIF
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Primary camera flashLED flash-
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Selfie camera
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Secondary cameraNoNo
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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 radioStereo FM radio with RDS
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Radio recordingFM recording-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g
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USBYes2.0
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BluetoothYesv2.1
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Bluetooth A2DP-Yes
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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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WAP-WAP 2.0/xHTML
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JavaYesYes
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Browser
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BrowserYes-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1000 mAh1530 mAh
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Talk time-14 h
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Standby time-1200 h