The government tracks my phone

 Your iPhone may soon be giving street cameras more information than your license plate ever could without you realizing it

US supreme court rules geofence warrants require constitutional privacy protections

It's none of the government's  business where me or my phone happens to be at any time.

Fourth Amendment

The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.