It can happen to anyone: you feel a "void" in his pocket and suddenly notice that your smartphone is no longer there. You may have left it somewhere (restaurant, office, or even at home) or, worse, he may have been stolen.

In addition to material damage (after all, a smartphone does not come cheap), there is also the risk of leakage of personal information. If your device has applications for Twitter, Facebook, your bank or a GMail account active, who have it in hand will have access to these services, you can post messages on its behalf and to change passwords, "hijacking" your digital life.

Therefore, you'd better install something anti-lost or anti-stolen in your smartphone. If your smartphone is android OS, I suggest you can install "motoblur", "plan b" or "lookout mobile security". About the instruction of the android applications, you can read here http://www.dootar.com/Android/Android-Mobi.../08/25/123.html