Alcatel OT-668 vs NIU C21A
Alcatel OT-668
NIU C21A
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Network
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2G networkGSM 850, 1900GSM 850, 900, 1800, 1900
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GPRSYesYes
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EDGE
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Availability
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Oficially announced2012-82013-3
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Status2012-82013-4
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height92.5 mm106 mm
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Width46 mm45 mm
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Thickness17.2 mm14.5 mm
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Weight76 g73 g
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ColorsAubergine, Black, Cherry RedBlack, Blue, Fuchsia, Green, Purple, Red, White
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Display
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Display typeTFTTFT
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Physical size1.77 inches1.8 inches
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Resolution128 x 160 pixels128 x 160 pixels
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Pixel density116 ppi114 ppi
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Display colors262144262144
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Hardware
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CPU104 MHz
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Internal storage2 MB64 Mbit
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Memory cardmicroSDmicroSD
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Memory card max8 GB32 GB
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Main camera
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Main camera2 MP
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Primary camera resolution1600 x 1200 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 cameraNoNo
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic(64), MP3 ringtonesVibration, Polyphonic
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Multimedia
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Radio FMStereo FM radio with RDSStereo FM radio
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Connectivity
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WLAN
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USBmicroUSB 2.0Yes
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Bluetoothv2.1v2.0
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Bluetooth A2DPYes-
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GPSNoNo
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Features
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Messaging SMSSMSSMS
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging IM-IM
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WAPWAP 2.0/xHTMLYes
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JavaYesNo
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity650 mAh600 mAh
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Talk time6 h4 h
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Standby time400 h200 h
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