Celkon A97i vs NIU GO 21
Celkon A97i
NIU GO 21
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100-
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HSDPA speedHSDPA-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2012-82014-5
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Status2012-82014-6
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM)
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Height124 mm105 mm
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Width64 mm44.9 mm
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Thickness11 mm14.2 mm
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Weight139 g66 g
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ColorsBlack, WhiteBlack, Blue, Gray, Green, Orange, Red
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Display
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Display typeTFT touchscreenTFT
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Physical size4.0 inches1.8 inches
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Resolution480 x 800 pixels128 x 160 pixels
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Pixel density233 ppi114 ppi
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Display colors-66560
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Hardware
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CPU1 GHz ARM Cortex-A9
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Internal storage-64 Mbit
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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, v4.0 (Ice Cream Sandwich)-
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Main camera
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Main camera8 MP
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Primary camera resolution3264 x 2448 pixels640 x 480 pixels
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Primary camera videovideono
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Selfie camera
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Secondary cameraYesNo
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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 ringtones
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Multimedia
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Radio FMStereo FM radioStereo FM radio
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Connectivity
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WLANWi-Fi
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USBYesmicroUSB 2.0
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BluetoothYesv2.1
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Bluetooth EDR-Yes
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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 EmailEmail-
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Messaging IMIMIM
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WAP-Yes
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JavaYes, via Java MIDP emulatorNo
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Browser
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HTMLYes-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1500 mAh650 mAh
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Talk time9 h 10 min6 h
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Standby time350 h200 h
