How you use Find my phone in android mobileGoogle released this feature with this statement -:
“We’ve all been there — you’ve searched under your car seat, tossed around the sofa cushions and you still can’t find your phone,” Google said in a message on Google+. “If you know where your computer is, you can now ask Google to find your Android phone from your desktop.”
In Google result you also find Ring button like Android device manager. With this ring button you can ring your android button for finding your lost android phone.