Theoretically, that requires a warrant, not a Google search.
What shape does my tinfoil hat have to be to make a Faraday cage?
right, but the google search only works if you have the login iformation. I can find where I’ve been by logging in to that page, but nobody else can go there and get where I’ve been unless Google gives them that, and then, you’re back to warrants being needed, I would assume.
Similarly with cell phones, if you don’t have your phone password protected or encrypted, a cop can take it from you and look through it because there’s nothing stopping him. Just like they will look through your wallet and possessions if you get arrested. If you have that encrypted or the phone password protected, you can refuse to relinquish that information without a warrant in the same way you can refuse to open a locked glove box without a warrant.