Alcatel OT-991 vs Celkon C75
Alcatel OT-991
Celkon C75
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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 850, 1900, 2100-
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HSDPA speedHSDPA, 7.2 Mbps-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2012-22014-12
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Status2012
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height122 mm110 mm
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Width68 mm62 mm
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Thickness10.8 mm13 mm
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Weight131.3 g
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ColorsBlack, WhiteBlack
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Display
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Display typeTFT capacitive touchscreenTFT touchscreen
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Physical size4.0 inches3.2 inches
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Resolution320 x 480 pixels320 x 480 pixels
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Pixel density144 ppi180 ppi
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Display colors262144-
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Hardware
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CPU800 MHz ARM Cortex-A9
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ChipsetMediatek MT6573-
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GPUPowerVR SGX531-
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Internal storage150 MB-
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Memory cardmicroSDmicroSD
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Memory card max32 GB8 GB
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OS
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OSAndroid OS, v2.3 (Gingerbread)-
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Main camera
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Main camera3.15 MP1.3 MP
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Primary camera resolution2048 x 1536 pixels1280 x 960 pixels
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Primary camera videovideovideo
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Primary camera flashLED flash-
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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; MP3 ringtonesVibration, Polyphonic, MP3 ringtones
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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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WLANWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0Yes
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Bluetoothv4.0Yes
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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 MMSMMSMMS
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Messaging EmailEmail-
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Messaging IMIM-
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WAPWAP 2.0/xHTML-
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JavaYes, via Java MIDP emulatorYes
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Browser
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HTMLYes-
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Browser-No
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1500 mAh1200 mAh
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Talk time-9 h 20 min
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Talk time 2G12 h-
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Talk time 3G10 h-
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Standby time400 h400 h
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