Alcatel OT-252 vs Karbonn KT21 Express
Alcatel OT-252
Karbonn KT21 Express
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Network
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2G networkGSM 900, 1800GSM
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2010-22014-12
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Status2010-6
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height100.5 mm
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Width58 mm
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Thickness12 mm
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Weight
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KeyboardQWERTY-
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ColorsBlackBlack
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Display
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Display typeTFTTFT capacitive touchscreen
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Physical size1.8 inches2.8 inches
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Resolution160 x 128 pixels-
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Pixel density114 ppi-
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Display colors66560-
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Hardware
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Internal storage-
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Memory cardmicroSD
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Memory card max-32 GB
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration; MP3 ringtonesVibration, Polyphonic(64), MP3 ringtones
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Multimedia
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Radio FMFM radio with RDSFM 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 MMS-MMS
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Messaging Email-Email
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JavaNoYes
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Browser
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BrowserNoYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity500 mAh1000 mAh
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Talk time5 h-
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Standby time400 h-
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Main camera
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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 video-video
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Primary camera flash-LED flash
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Selfie camera
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Secondary camera-No