Celkon A21
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Network
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2G networkGSM 900, 1800
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3G networkHSDPA 2100
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HSDPA speedHSDPA
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2014-12
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Status2014-12
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Design
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SIMDual SIM (dual stand-by)
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Height124.8 mm
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Width66.1 mm
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Thickness10.8 mm
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Weight115.3 g
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ColorsBlack, Blue, Red
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Display
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Display typeCapacitive touchscreen
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Physical size4.0 inches
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Resolution320 x 480 pixels
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Pixel density144 ppi
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Hardware
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CPUDual-core 1.2 GHz
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ChipsetMediatek MT6582
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Memory ROM512 MB
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Memory RAM256 MB
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Memory cardmicroSD
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Memory card max32 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 camera3.15 MP
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Primary camera videovideo
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Selfie camera
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Selfie camera1.3 MP
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Sound
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3.5mm jackYes
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LoudspeakerYes
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NotificationsVibration, Polyphonic, MP3 ringtones
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Multimedia
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Radio FMFM radio
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Connectivity
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WLANWi-Fi
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USBYes
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Bluetoothv4.0
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GPSNo
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Features
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Messaging SMSSMS(threaded view)
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Messaging MMSMMS
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Messaging EmailEmail
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JavaYes, via Java MIDP emulator
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Browser
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HTMLYes
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Battery
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Battery typeLi-Ion
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Battery capacity1500 mAh
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Talk time 3G8 h
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Standby time 3G120 h