Celkon A40 vs Karbonn KT21 Express
Celkon A40
Karbonn KT21 Express
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Network
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2G networkGSM 900, 1800GSM
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-12014-12
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Status2014-1
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Design
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SIMDual SIMDual SIM (Mini-SIM)
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Height126.2 mm
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Width64 mm
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Thickness10.8 mm
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Weight126.5 g
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ColorsBlue, White, YellowBlack
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Display
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Display typeTFT touchscreenTFT capacitive touchscreen
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Physical size4.0 inches2.8 inches
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Resolution480 x 800 pixels-
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Pixel density233 ppi-
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Hardware
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CPUDual-core 1.3 GHz
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Internal storage4 GB-
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Memory RAM512 MB-
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSAndroid OS, v4.2.2 (Jelly Bean)-
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Main camera
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Main camera5 MP3.15 MP
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Primary camera resolution2592 x 1944 pixels2048 x 1536 pixels
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Primary camera videovideovideo
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Primary camera flash-LED 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, MP3 ringtonesVibration, Polyphonic(64), MP3 ringtones
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Multimedia
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Radio FMFM radioFM radio
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Radio recording-FM recording
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0Yes
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BluetoothYesYes
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GPSYesNo
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIM-
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JavaNoYes
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Browser
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HTMLYes-
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Browser-Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1500 mAh1000 mAh
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Talk time--
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Standby time--
