Celkon A1 vs Karbonn A4
Celkon A1
Karbonn A4
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Network
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2G networkGSM 900, 1800GSM 850, 1900
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3G network-HSDPA 900, 2100
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HSDPA speed-HSDPA
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HSUPA speed-HSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122013-3
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Status2013-3
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM)
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Height113.5 mm124.8 mm
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Width54.5 mm66 mm
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Thickness12.3 mm9.5 mm
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Weight127 g75 g
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ColorsBlackWhite/Black
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Display
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Display typeTFT touchscreenTFT capacitive touchscreen
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Physical size3.2 inches4.0 inches
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Resolution240 x 400 pixels320 x 480 pixels
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Pixel density146 ppi144 ppi
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Display colors-262144
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Hardware
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Internal storage-256, 512 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, v2.2.1 (Froyo)Android OS, v2.3.6 (Gingerbread)
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Main camera
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Main camera3.15 MP3.15 MP
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Primary camera resolution2048 x 1536 pixels2048 x 1536 pixels
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Primary camera videovideovideo
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Selfie camera
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Secondary cameraNoYes
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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, MP3, WAV ringtones
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Multimedia
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Radio FMStereo FM radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11gWi-Fi
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WLAN WiFi Hotspot-Yes
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USB2.0Yes
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BluetoothYesYes
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GPSYes, with A-GPSNo
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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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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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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 capacity1000 mAh1400 mAh
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Talk time5 h4 h 20 min
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Standby time400 h250 h
