writes "The Michigan State Police have a high-tech mobile forensics device that can be used to extract information from cell phones belonging to motorists stopped for minor traffic violations. The American Civil Liberties Union (ACLU) of Michigan last Wednesday demanded that state officials stop stonewalling freedom of information requests for information on the program. A US Department of Justice test of the CelleBrite UFED used by Michigan police found the device could grab all of the photos and videos off of an iPhone within one-and-a-half minutes. The device works with 3000 different phone models and can even defeat password protections. 'Complete extraction of existing, hidden, and deleted phone data, including call history, text messages, contacts, images, and geotags,' a CelleBrite brochure explains regarding the device's capabilities."
Popular Mechanics has a short conversation with a 4th Amendment lawyer
about the practice of slurping cellphone data, too, though it's unclear if the Michigan police are actually using these devices to their full potential.