U.S. Department of Justice Cellular Service Provider Data Retention Guide

This Department of Justice guide to cellular provider data retention was first obtained by the American Civil Liberties Union of North Carolina. For more information on the document, see Wired’s article on the subject. See also:

AT&T Mobility Cellular Subpoena Compliance Contact Information 2011
Verizon Wireless Law Enforcement Resource Team (LERT) Guide
Verizon Law Enforcement Legal Compliance Guide
Verizon Leveraging Commercial Wireless Services for Law Enforcement Brief
Confidential Law Enforcement Telephone, Cellular, Satellite & VoIP Investigation Guide
MetroPCS CALEA Compliance Manual
Sprint Law Enforcement Subpoena Compliance Manual
T-Mobile Law Enforcement Relations