Always turn on SEND LAST LOCATION
but if you didn't set it up in the first place then your phone is gone......forever
Why do people think this stuff is automatic?
If you READ the instructions or better yet, go to a Apple store and have one of those people help you set it up and explain it to you
Even when battery is critically low/about to shut down, the device will send it's last GPS coordinates to Find My iPhone map
There is NO physical way to REMOTELY turn on ANYTHING that does NOT have power going to it, you need power going into ANYTHING to be able to remotely turn it on
So even a "hemDroid" is NOT actually turned off to be remotely "turned on", it's more like WAKE FROM SLEEP - NETWORK
Turning something off, means NO POWER at all
If you can't keep your iPhones (you always loose them or get stolen), then switch to a $49 Walmart Android phone and pick new people to hang around with