Abstract: Smartphones with open operating systems are getting popular with the passage of time. Increased exposure of open source smartphones also increased the security risk. Android is one of the most popular open source operating system for mobile platforms. Android provide a base set of permissions to protect phone resources. But still the security area is underdeveloped. This survey is about the current work done on the Android
operating system. Some of the techniques, which can give a positive edge to the security area, are analyzed in the present survey paper. These techniques are basically to provide a better security and to make the Android security mechanism more flexible. As the current security mechanism is too rigid. User does not have any control over the usage of an application. User has only two choices, a) allow all permissions and application will
install, b) deny all permissions and installation will fail.

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