Find a Lost Galaxy S7
You can find a lost or stolen Galaxy S7 or S7 Edge using Samung's own tools, or the Android Device Manager. I prefer the latter and it's available on the Google Play Store and tracks it right down to a few meters of distance, but Samsung's own method is pretty great too.
Samsung includes a Find My Mobile option that lets you track a lost or Stolen Galaxy S7 and prevents someone else from re-activating it.
Go to Settings > Lock screen and security > Find My Mobile. Login with your Samsung account or fingerprint and then turn on remote controls, Google Location service and Reactivation lock.
If you lose your phone you can go to the Find My Mobile site and locate your device. You can make the phone ring, lock it, wipe it, turn on emergency mode or Ultra Power Saving mode and even grab the call logs. There is an option to remotely unlock it as well. Pretty handy in case of loss or theft.