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Technical details for
Nokia N81ViewSonic ViewPad 4
Nokia N81Nokia N81
ManufactureNokiaViewSonic
ModelN81ViewPad 4
Form factorSliderBlock
Weight140 gramNA
Dimensions (HxWxD)102 x 50 x 18121.00 x 66.00 x 11.00
Operating SystemOtherAndroid
Networks2G - 850/900/1800/1900
3G - 2100
2G - 800/850/1800/1900
3G - 900/2100
HSCSDNoNo
GPRSYesYes
EDGEYesYes
UMTSYesYes
HSDPANoYes
HSPA+NoNo
WiMAXNoNo
LTE (4G light)NoNo
WLAN / Wi-FiYesYes
Wi-Fi HotspotNoNo
Wi-Fi DirectNoNo
SMSYesYes
MMSYesYes
EmailYesYes
HDMI outNoYes
USB portNoNo
MHLNoNo
BluetoothYesYes
Bluetooth versionNANA
DLNANoNo
GPSNoYes
GlonassNoNo
ANT+NoNo
IrDANoNo
NFCNoNo
3.5 mm audio connectorNoNo
CameraYesYes
Camera resolution2 Megapixels, 20x digital zoom5 megapixel, autofocus
Image StabilizationNoNo
BSI sensorNoNo
Camera Flash/LightYesYes
Flash typeNANA
Video recordingYesYes
Video capture resolutionNANA
Second CameraNAVGA (640 x 480)
Display size2.4 inches4.10
TouchscreenNoYes
Colour displayYesYes
Number of colours1670000016000000
Display width240480
Display height320800
PPI166.67227.55
Second DisplayNANA
CPUNA1 GHz Qualcomm MSM 8255
GPUNANA
Memory18MB. Expandable up to 4GB with miniSD card512 MB
Micro SIMNoNo
Dual SIMNoNo
MP3YesYes
Ringtones / Music file formatMP3, AAC, eAAC+, AAC+, WMA, WAVMP3
JavaYesNo
GamesSpace Impact Light, Asphalt demo, Fifa Soccer 2007 demoYes
FM RadioYesNo
Battery1050 mAhNA
Standby time (h)408NA
Talktime (m)240NA
Wireless ChargingNoNo
Browser2.0 XHTMLAndroid HTML Webkit
CalendarYesYes
VoicedialingYesYes
IP CodeNANA
Predictive textYesYes
RSS readerNoNo
VoicememoYesYes
PC SynchronizationYesNA
SyncMLNoYes
WebsiteWebsite Website 

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