If you have a rooted android device, you should consider to install a firewall that will block access to the internet per app. So you can even install bad apps that would collect your private data and or sending you a lot of spam adds without to worry about your privacy.
I used DroidWall but the development stopped. There is an active fork, call AFWall+.
If you like the app very much you can buy a pro version with the same feature set at the play store.