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. If you know where your computer is, you can now ask Google to find your Android phone from your desktop. If the pesky phone is hiding nearby, Google can ring it for you — or you can see it on the map if you, say, forgot it at the bar. Just make sure you’ve got the latest version of the Google app!
How to setup your phone so you search it via desktop or laptop.
You need two apps in phone.
1. Android Device Manager
2. Google App Updated Version
Then Open Google App and follow the steps
Link your phone to Google
You can connect your Android phone to Google, which lets you send information from your computer to your phone. For example, you can send directions you searched for on your computer to Google Maps on your phone.
Link your Android phone
Step 1: Update the Google app
On your phone, go to the Google app page on the Play Store.
Touch Update.
Step 2: Turn on Google Now
On your phone, open the Google app .
In the top left corner, touch the Menu icon menu icon > Settings > Now cards.
Turn on Show cards.
Turn on Show notifications.
Step 3: Turn on Web & App Activity
Visit the Account History page.
Make sure the switch is on (green).
Step 4: Sign in to your browser
On your phone, open the Google app .
In the top left corner, touch the Menu icon menu icon.
In the top left corner, you'll see the email address that you use for the Google app.
Visit www.google.com on your computer.
If you aren't signed in already, click Sign in in the top right corner of the page.
Sign in using the Google Account you use for the Google app.
Step 5: Send information to your phone
Do one of the searches below, like note to self, or send directions to my phone.
If a box doesn't pop up with the option to send information to your phone, try refreshing the page. If you just turned on Google Now, it may take a few minutes for the box to show up
Now Open Google.com and write Find My Phone and Hit Enter button. 
