A recent FOIA request to the Federal Bureau of Investigation for "manuals, documents or other written guidance used to access or analyze data gathered by programs developed or deployed by Carrier IQ" was met with a telling denial. In it, the FBI stated it did have responsive documents - but they were exempt under a provision that covers materials that, if disclosed, might reasonably interfere with an ongoing investigation.

Carrier IQ came under fire after a security researcher demonstrated that the previously little-known company had software installed on a variety of phones on a variety of networks that could track user locations, keystrokes, encrypted Internet traffic and more, some of which was or could be sent back to either the cell phone owner's service provider or Carrier IQ's own servers.