Last week, the Supreme Court ruled that if you are arrested, or even being questioned by police, they must present a Warrant before searching your phone.
-Unless that is, you give them permission or there is a "special circumstance."
Chief Justice John Roberts wrote, “Modern cell phones are not just another technological convenience. With all they contain and all they may reveal, they hold for many Americans ‘the privacies of life,’” “The fact that technology now allows an individual to carry such information in his hand does not make the information any less worthy of the protection for which the Founders fought. Our answer to the question of what police must do before searching a cell phone seized incident to an arrest is accordingly simple — get a warrant.”
Read more from MSNBC.