Can the Government Track Your Phone's Location Without a Warrant?

Can the government track your phone's location without a warrant? For long-term history from your carrier — no: in Carpenter v. United States (2018) the Supreme Court said that's a search needing a warrant, and in Chatrie v. United States (2026) it extended that to geofence data held by tech companies. Here's what the law actually says, in plain English: cell-site location data, the third-party doctrine, the GPS and wiretap cases behind it, the data-broker loophole, geofence warrants, and what's still unsettled. CHAPTERS 0:00 The hook 0:27 The ground rule 0:44 How your phone tracks you 1:04 The time machine 1:23 The old rule 1:42 Where that rule came from 2:01 The problem 2:21 The case 2:40 Carpenter v. United States 2:58 The ruling 3:20 The key line 3:38 Same in all 50 states 3:51 The catch: it's narrow 4:13 What it didn't decide 4:33 The car-tracking cousin 4:58 The older root 5:21 The workaround: buying data 5:32 The data broker gap 5:54 Why it matters 6:08 Geofence warrants 6:24 The courts split — then the Court stepped in 6:44 Chatrie v. United States 7:09 What it left open 7:33 The practical layer 7:56 The teeth: exclusionary rule 8:25 Why the rule exists 8:42 The phone in your pocket 9:00 The honest summary 9:19 The bottom line 9:38 Practical takeaway 9:55 Outro Sources: U.S. Constitution (4th Amendment); Carpenter v. United States, 585 U.S. 296 (2018); Chatrie v. United States, 609 U.S. ___ (2026); United States v. Jones (2012); Katz v. United States (1967); Smith v. Maryland (1979); United States v. Miller (1976). Educational, not legal advice. All images are public domain. Educational content - not legal advice. ‪@precedentexplained‬