'Robust phone' like cops and construction workers use (There are several models of robust phones, and they are more than just a case and screen protector).
At work (mechanical contractor) we all have Kyocera E7200 "semi-ruggedized" (Android) phones, and while our Techs don't care for them, we've had pretty good luck with them. But they're old and heavy....
I'm going to take-off from work soon and, using my wife's phone, see if I can't find the last location of my iPhone.....if I had the Find My iPhone app enabled, that is.
And, yeah. If I can find a good "dumb phone", I'll certainly post it here.