Nokia N81 8GB vs O2 XDA Comet
Nokia N81 8GB
O2 XDA Comet
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800, 1900
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3G networkUMTS 2100HSDPA 1900, 2100
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HSDPA speed-HSDPA
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Speed YesYes, 384 kbps-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2007-102007-9
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Status
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Design
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SIMMini-SIMMini-SIM
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Height102 mm106 mm
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Width50 mm58 mm
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Thickness17.9 mm19 mm
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Weight140 g145 g
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ColorsCocoa brownSilver
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Display
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Display typeTFTTFT resistive touchscreen
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Physical size2.4 inches2.7 inches
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Resolution240 x 320 pixels240 x 320 pixels
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Pixel density167 ppi148 ppi
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Display colors1677721666560
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Hardware
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CPU369 MHz ARM 11620 MHz Intel XScale PXA 270
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Memory ROM-1 GB
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Memory RAM96 MB64 MB
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Internal storage8 GB-
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Memory cardminiSD
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OS
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OSSymbian OS 9.2Microsoft Windows Mobile 6.0 Professional
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Main camera
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Main camera2 MP2 MP
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Primary camera resolution1600 x 1200 pixels1600 x 1200 pixels
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Primary camera video320p@15fpsvideo
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Primary camera flashLED flashLED flash
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Selfie camera
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Secondary camera-VGA camera
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Secondary camera videocallingvideocalling-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration; Downloadable polyphonic, monophonic, MP3 ringtonesVibration; Downloadable polyphonic, MP3 ringtones
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Multimedia
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Radio FMStereo FM radioStereo FM radio with RDS
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Radio visualVisual radio-
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Connectivity
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WLANWi-Fi 802.11b, 802.11gWi-Fi 802.11b, 802.11g
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WLAN UpnpYes-
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USBmicroUSB 2.0Yes
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Bluetoothv2.0v1.2
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Bluetooth A2DPYes-
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Infrared-Yes
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GPSNoNo
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Features
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Messaging SMSSMSSMS
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Messaging MMSMMSMMS
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Messaging Instant MessagingInstant MessagingInstant Messaging
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Messaging EmailEmailEmail
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WAPWAP 2.0/xHTMLWAP 2.0/xHTML
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JavaYesYes
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Java MIDPMIDP 2.0MIDP 2.0
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Browser
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HTMLYesHTML (PocketIE)
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity1050 mAh-
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Talk time-6 h
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Talk time 2G4 h-
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Talk time 3G3 h-
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Standby time410 h200 h
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