Shit gets stolen nonstop, and not just by fellow unhoused. When the police come and tear down camps, there's no expectation of recovering anything left behind. 9 times out of 10 they're followed by a public works crew throwing everything into dumpsters. Good luck getting your phone (or any of your other possessions) back.
i thought in california there's a recent law stopping police from tearing down camps because exactly homeless people's property is now considered same "class" as normal people's hence you can't just throw it out.