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Try this:
Settings > USB Settings
Uncheck "Ask on Plug"
Select "Mass Storage Mode"
Then, unplug USB cable and plug back in.
if that doesn't work reboot the android device.
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Android USB Mass Storage Not Working
Last Updated: 6/28/12Try this:
Settings > USB Settings
Uncheck "Ask on Plug"
Select "Mass Storage Mode"
Then, unplug USB cable and plug back in.
if that doesn't work reboot the android device.

Keywords: Android device USB Mass Storage Not Working