Alcatel OT-991 vs Celkon CT-910+
Alcatel OT-991
Celkon CT-910+
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 850, 1900, 2100HSDPA 2100
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HSDPA speedHSDPA, 7.2 MbpsHSDPA
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HSUPA speed-HSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2012-22013-7
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Status20122013-7
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Design
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SIMMini-SIMYes
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Height122 mm193 mm
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Width68 mm123 mm
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Thickness10.8 mm9 mm
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Weight131.3 g180 g
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ColorsBlack, WhiteGray
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Display
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Display typeTFT capacitive touchscreenCapacitive touchscreen
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Physical size4.0 inches7.0 inches
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Resolution320 x 480 pixels600 x 1024 pixels
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Pixel density144 ppi170 ppi
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Display colors262144-
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Hardware
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CPU800 MHz ARM Cortex-A91 GHz Dual-core
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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 GB64 GB
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OS
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OSAndroid OS, v2.3 (Gingerbread)Android OS, v4.1 (Jelly Bean)
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Main camera
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Main camera3.15 MP2 MP
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Primary camera resolution2048 x 1536 pixels1600 x 1200 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 cameraYesVGA camera
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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 RDSFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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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-GPSYes, with A-GPS
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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WAPWAP 2.0/xHTML-
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLYes-
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Browser-Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1500 mAh3500 mAh
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Battery removable-Non-removable
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Talk time-10 h
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Talk time 2G12 h-
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Talk time 3G10 h-
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Standby time400 h300 h
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