Celkon A99 vs NIU C21A
Celkon A99
NIU C21A
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Network
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2G networkGSM 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1900, 2100-
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2014-122013-3
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Status2013-4
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM)
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Height121.4 mm106 mm
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Width64 mm45 mm
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Thickness11.3 mm14.5 mm
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Weight120 g73 g
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ColorsBlackBlack, Blue, Fuchsia, Green, Purple, Red, White
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Display
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Display typeTFT capacitive touchscreenTFT
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Physical size4.0 inches1.8 inches
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Resolution320 x 480 pixels128 x 160 pixels
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Pixel density144 ppi114 ppi
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Display colors262144262144
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Hardware
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CPU650 MHz
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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, v2.3.5 (Gingerbread)-
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Main camera
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Main camera3.15 MP
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Primary camera resolution2048 x 1536 pixels640 x 480 pixels
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Primary camera videovideono
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Camera features-No
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Selfie camera
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Secondary cameraYesNo
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic, MP3 ringtonesVibration, Polyphonic
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Multimedia
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Radio FMStereo FM radio with RDSStereo FM radio
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Radio recordingFM recording-
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Radio transmitterFM transmitter-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0Yes
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Bluetoothv2.1v2.0
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Bluetooth A2DPYes-
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GPSYes, with A-GPSNo
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMS-
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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 capacity1200 mAh600 mAh
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Talk time3 h4 h
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Standby time400 h200 h
