Yesterday afternoon my wife and I spent about 2 hours looking for it: our yard, neighbors yards, ditches along the local roads leading out to the highway; no joy. Late last night I even got out the metal detector and checked the ditch along the highway where I have to make a U-turn (really odd highway crossing) as there's much less traffic at oh-dark thirty- still nothing.
Rain moved-in overnight, and the phone is not waterproof, so I'm about 99% certain I can kiss all of my pictures good-bye.