Karbonn A21 vs Vodafone Chat 655
Karbonn A21
Vodafone Chat 655
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Network
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2G networkGSM 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 2100
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HSDPA speedHSDPA, 7.2 MbpsHSDPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122014-12
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Status2014-12
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Design
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SIMDual SIM (Mini-SIM)Mini-SIM
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Height112 mm
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Width61.1 mm
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Thickness11 mm
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Weight104 g
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Keyboard-QWERTY
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ColorsPearl WhiteGray
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Display
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Display typeTFT capacitive touchscreenTFT
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Physical size4.5 inches2.4 inches
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Resolution480 x 800 pixels320 x 240 pixels
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Pixel density207 ppi167 ppi
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Display colors262144-
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Hardware
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CPUDual-core 1.2 GHz
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Memory RAM512 MB-
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Internal storage4 GB64 MB
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Memory cardmicroSDmicroSD
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Memory card max32 GB16 GB
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OS
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OSAndroid OS, v4.0 (Ice Cream Sandwich)-
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Main camera
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Main camera5 MP2 MP
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Primary camera resolution2592 x 1944 pixels1600 x 1200 pixels
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Primary camera videovideovideo
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Primary camera Autofocusautofocus-
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Primary camera flashLED flash-
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Selfie camera
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Secondary camera-No
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Selfie camera1.3 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, MP3, WAV ringtonesVibration, MP3 ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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USBmicroUSB 2.02.0
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Bluetoothv2.1Yes
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Bluetooth A2DPYes-
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GPSYes, with A-GPSYes
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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JavaYes, via Java MIDP emulatorYes
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Browser
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HTMLYesYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1800 mAh-
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Talk time5 h5 h
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Standby time200 h509 h
