Hello: I have a Samsung Google phone, model: KHSAMNEXUSS. How can I tell if it is 'rooted'? If it is not, is there any reason why I should not 'root' it? I ask this because I may be interested in installing 'DroidWall' and maybe some other apps that require a 'rooted' phone. If it matters, I am in Canada using a Koodo smartphone plan. Thanks, Rob.