Citing anonymous officials and sources, The Washington Post and The Wall Street Journal both said the NSA’s phone data collection has had a steep drop-off since 2006. According to the newspapers, the government has been unable to keep pace since then with a national surge in cellphone usage and dwindling landline use by American consumers.
The Post said the NSA takes in less than 30 percent of all call data; the Journal said it is about or less than 20 percent. In either case, the figures are far below the amount of phone data collected in 2006, when the government extracted nearly all of U.S. calling records, both newspapers reported. NSA officials intend to press for court authorization to broaden their coverage of cellphone providers to return the government to near-total coverage of Americans’ calling data, the newspapers said.
Read more at: Phys.org\