I am fairly new to Android (switched from iPhone in Oct 2016) so I admit this is kind of a newbie question. I now have an s8, and I'm wondering about the general approach to phone security. On iPhone I used Find my iPhone to locate it if it was lost and for other general security things, etc. Should I be using an app like ESET mobile security (or another one) to protect my phone from viruses, hacks, in case of theft, etc.? Or does everyone just use Google passwords, lock screen etc., and trust the carrier and software security updates?