Karbonn KT21 Express vs Samsung B7722
Karbonn KT21 Express
Samsung B7722
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Network
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2G networkGSMGSM 850, 900, 1800, 1900
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3G network-HSDPA 2100
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HSDPA speed-HSDPA, 3.6 Mbps
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122010-6
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Status2010-6
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Design
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SIMDual SIM (Mini-SIM)Dual SIM, dual call (Mini-SIM, dual stand-by)
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Height113.5 mm
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Width55.5 mm
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Thickness14.3 mm
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Weight112 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 inches3.2 inches
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Resolution-240 x 400 pixels
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Pixel density-146 ppi
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Display colors-262144
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Hardware
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Internal storage-270 MB
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Memory cardmicroSDmicroSD
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Memory card max32 GB16 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 pixels2560 x 1920 pixels
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Primary camera videovideo320p@30fps
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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 cameraNoYes
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Sound
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3.5mm jackYesNo
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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 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
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Messaging MMSMMSMMS
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Messaging RSS-RSS
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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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WAP-WAP 2.0/xHTML
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JavaYesYes
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Java MIDP-MIDP 2.1
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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 mAh1200 mAh
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Talk time--
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Talk time 2G-12 h 50 min
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Talk time 3G-5 h 40 min
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Standby time--
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Standby time 2G-420 h
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Standby time 3G-330 h
