Windows Phone 8 : How to Find Your Lost Mobile

1. First of all open app list and select Settings.
2. Now Settings >> find my phone option. 
3. Just move the slider to right for activating Find My Phone option. If it is colored that means its active
4.Now, open this link Windows Phone Page, just sign in with account that you use on your phone. 
5. After that, just make a click on your name at the top, now it will expand menu and choose Find My Phone.
6. On this page means Find My Phone page, you will get three options, that are Ring, Lock and Erase. The work of the first characteristic is to ring your smart phone, which is advantageous when you don't recollect where you have abandoned it. The second will give you a chance to bolt the telephone utilizing a PIN code and alternatively send a memo to your telephone. The final one will restore your smart phone to the industrial facility settings and delete all substance on your smart phone, incorporating your records. After that, you won't have the ability to find your telephone again on the grounds that the record will be eradicated.
7. After selecting first option, website try to ring your phone. You will get below screen:
8. If you select second one means Lock function, you can lock your phone using a 4-digit PIN code.
9. Third one is dangerous, Please use it only if it is impossible to get your phone back. After erasing, the phone will be restored.
  10. you can find the location of your phone with map. But for this you have to leave the location feature on. After that Just press the Find my phone and the location of the phone will be marked on the map.