There are various applications to help find a phone, such as the Lookout app. It works with iOS and Android platforms.
Lookout offers security from hackers and helps locate lost or stolen phones. It tracks frequent apps to make sure there are no odd behaviors. It also can lock the phone when it is missing. The app can send a photo of the phone or thief when it thinks it has been stolen. Personal information can be deleted by going to the app's website. Lastly, it saves the phone's location when the battery dies so it can be easily tracked.