Need help finding a lost phone
Since this is in the Samsung forum, I'm assuming the lost phone is an Android. You can either go to android.com/find on a browser, or use the "find my device" app on another mobile device to find the last known location. If the phone is likely stolen, you can also factory reset it remotely using the same means.
I'd posted a more detailed response to someone else who was in the same situation a little while ago…took me a bit to find the thread, but see below for more info:
Lost phone - Verizon
