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SwitchDataSwitch puts an icon in the notification bar to (de)activate the mobile network data traffic (2G/3G/...) in just a single click.
This application will help you save battery by quickly disabling mobile network when you don't need Internet.
It is totally free of charge and doesn't have ads. Please feel free to send us comments to improve it :http://bitbucket.org/nicobo/switchdataswitchEnjoy !