California’s Supreme Court has ruled(not unanimously) that once arrested it’s legal for police to check your text folder without the need for a warrant. The justification for this privacy intrusion is that a phone search is “incidental” to a lawful arrest and its contents, much like the contents of your pockets or bags, fall within the realm of reasonable search.
@TatWza

Two of the judges in the case did dissent(try to say no to the ruling), with one noting that “never before has it been possible to carry so much personal or business information in one’s pocket or purse,” which she argues should afford your iPhone, Droid or BB a higher level of privacy protection than, say, the packet of gummy bears you have in the other pocket, but you know cali law….