The FBI have professional phone forensics/evidence labs around the country. They work with handset manufacturers and special purpose vendors to extract and anal

The FBI have professional phone forensics/evidence labs around the country. They work with handset manufacturers and special purpose vendors to extract and analyze every bit of data that exists in the phone. It's inconceivable that CarrierIQ would store unencrypted data on a large number of phones and the FBI would not know how to access it. More than likely, CIQ sells them the tool to do it, or at least provides documentation.