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Technical details for
HTC J Butterfly HTL21ViewSonic ViewPad 4
HTC J Butterfly HTL21HTC J Butterfly HTL21
ManufactureHTCViewSonic
ModelJ Butterfly HTL21ViewPad 4
Form factorBlockBlock
Weight140 gramNA
Dimensions (HxWxD)143 x 71 x 9.1121.00 x 66.00 x 11.00
Operating SystemAndroidAndroid
Networks3G - CDMA2000 1xEV-DO2G - 800/850/1800/1900
3G - 900/2100
HSCSDNoNo
GPRSNoYes
EDGENoYes
UMTSNoYes
HSDPANoYes
HSPA+NoNo
WiMAXNoNo
LTE (4G light)YesNo
WLAN / Wi-FiYesYes
Wi-Fi HotspotYesNo
Wi-Fi DirectNoNo
SMSYesYes
MMSYesYes
EmailYesYes
HDMI outNoYes
USB portYesNo
MHLNoNo
BluetoothYesYes
Bluetooth version4.0NA
DLNANoNo
GPSYesYes
GlonassYesNo
ANT+NoNo
IrDANoNo
NFCYesNo
3.5 mm audio connectorYesNo
CameraYesYes
Camera resolution8 megapixel5 megapixel, autofocus
Image StabilizationNoNo
BSI sensorNoNo
Camera Flash/LightYesYes
Flash typeLEDNA
Video recordingYesYes
Video capture resolution1080pNA
Second Camera2.1 megapixelVGA (640 x 480)
Display size5 inches4.10
TouchscreenYesYes
Colour displayYesYes
Number of colours1677721616000000
Display width1080480
Display height1920800
PPI440.58227.55
Second DisplayNANA
CPU1.5 GHz quad-core, Qualcomm Snapdragon S4 APQ8064 - MDM9615 1 GHz Qualcomm MSM 8255
GPUNANA
Memory2 GB RAM. 16 GB internal storage512 MB
Micro SIMNoNo
Dual SIMNoNo
MP3YesYes
Ringtones / Music file formatMP3, AAC, AAC+, eAAC+, WMA, WAVMP3
JavaNoNo
GamesYes, downloadableYes
FM RadioNoNo
Battery2020NA
Standby time (h)NANA
Talktime (m)NANA
Wireless ChargingNoNo
BrowserAndroid HTML WebkitAndroid HTML Webkit
CalendarYesYes
VoicedialingYesYes
IP CodeIPX5NA
Predictive textYesYes
RSS readerYesNo
VoicememoYesYes
PC SynchronizationYesNA
SyncMLYesYes
WebsiteWebsite Website 

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