I use Lookout. At first it was Advanced System Care, but then I realized it was slowing my phone down quite a bit. I like Lookout's device manager. If you pay so much a month for their premium service, your phone takes a picture and last location and emails you anytime it's turned off. So if some id10t steals your phone, you might get a chance to see the perp. It sends all this to you in email.
Boom! From My S5