Warrantless cell phone searches spread to more states - CNN
Think about all the data -- photos, videos, text messages, calendar items, apps, call log, voice mail, and e-mail -- on your cell phone right now. If you're arrested, could the police search your cell phone? And would they need a warrant?
That depends on which state you're in.
In California, it is legal for police to search an arrestee's cell phone without a warrant --ever since a January decision by the California Supreme Court.