Download the Orbot app from Google Play Store.
Start the application and press the "Menu" on your phone. After selecting "Settings" and look for the option "Tor Everything" to activate it.
If you use the tethering feature, you can protect all the other devices connected: to do so, you must select the "Tor Tethering", again from the menu "Settings".
In addition, to further increase the level of security, you can avoid using nodes Italian Orbot Tor network by selecting "Exclude Nodes" from the "Settings" and fill in the field with this italy
(http://s9.postimage.org/gjketyyff/orbot.jpg) (http://postimage.org/image/gjketyyff/)