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Technical details for
ViewSonic ViewPad 4Nokia Lumia 820
ViewSonic ViewPad 4ViewSonic ViewPad 4
ManufactureViewSonicNokia
ModelViewPad 4Lumia 820
Form factorBlockBlock
WeightNA160.00
Dimensions (HxWxD)121 x 66 x 11123.80 x 68.50 x 9.90
Operating SystemAndroidWindows Phone 8
Networks2G - 800/850/1800/1900
3G - 900/2100
2G - 850/900/1900
3G - 850/900/1900/2100
HSCSDNoNo
GPRSYesYes
EDGEYesYes
UMTSYesYes
HSDPAYesYes
HSPA+NoNo
WiMAXNoNo
LTE (4G light)NoYes
WLAN / Wi-FiYesYes
Wi-Fi HotspotNoYes
Wi-Fi DirectNoNo
SMSYesYes
MMSYesYes
EmailYesYes
HDMI outYesNo
USB portNoYes
MHLNoNo
BluetoothYesYes
Bluetooth versionNA3.1
DLNANoYes
GPSYesYes
GlonassNoYes
ANT+NoNo
IrDANoNo
NFCNoYes
3.5 mm audio connectorNoYes
CameraYesYes
Camera resolution5 megapixel, autofocus8 megapixels, 4x digital zoom, 28mm focal length, f/2.2
Image StabilizationNoNo
BSI sensorNoNo
Camera Flash/LightYesYes
Flash typeNALED
Video recordingYesYes
Video capture resolutionNA1080p
Second CameraVGA (640 x 480)NA
Display size4.1 inches4.30
TouchscreenYesYes
Colour displayYesYes
Number of colours1600000016777216
Display width480480
Display height800800
PPI227.55216.97
Second DisplayNANA
CPU1 GHz Qualcomm MSM 82551.5 GHz dual-core Snapdragon S4 MSM8960
GPUNAAdreno 225
Memory512 MB1 GB RAM. 8 GB internal storage. Expandable up to 32 GB using microSD card
Micro SIMNoYes
Dual SIMNoNo
MP3YesYes
Ringtones / Music file formatMP3MP3, AAC, AAC, AMR-NB, AMR-WB, WAV, WMA
JavaNoNo
GamesYesYes
FM RadioNoNo
BatteryNA1650 mAh
Standby time (h)NA330
Talktime (m)NA840
Wireless ChargingNoNo
BrowserAndroid HTML WebkitInternet Explorer 10
CalendarYesYes
VoicedialingYesYes
IP CodeNANA
Predictive textYesYes
RSS readerNoYes
VoicememoYesYes
PC SynchronizationNAYes
SyncMLYesYes
WebsiteWebsite Website 

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