Karbonn KT21 Express vs Sony Ericsson A8i
Karbonn KT21 Express
Sony Ericsson A8i
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Network
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2G networkGSMGSM 850, 900, 1800, 1900
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3G network-TD-SCDMA
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TD-SCDMA speed-TD-SCDMA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122010-8
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Status2010
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Design
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SIMDual SIM (Mini-SIM)Mini-SIM
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Height117 mm
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Width59 mm
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Thickness14 mm
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Weight136 g
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ColorsBlackBlack, White
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Display
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Display typeTFT capacitive touchscreenTFT touchscreen
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Physical size2.8 inches3.5 inches
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Resolution-480 x 854 pixels
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Pixel density-280 ppi
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Display colors-262144
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Hardware
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Internal storage-200 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 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 Autofocus-autofocus
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Primary camera flashLED 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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USBYesmicroUSB 2.0
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BluetoothYesv2.1
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Bluetooth A2DP-Yes
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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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WAP-WAP 2.0/xHTML
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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-Po
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Battery capacity1000 mAh-
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Talk time--
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Talk time 2G-5 h
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Talk time 3G-7 h 30 min
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Standby time--
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Standby time 2G-260 h
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Standby time 3G-260 h
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OS
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OS-Android-based OPhone OS v2.0
