SAN FRANCISCO — Samsung Electronics will add two safeguards to its latest smartphone in an effort to deter rampant theft of the mobile devices nationwide, the company said Friday.

The world’s largest mobile-phone maker said users will be able to activate for free its “Find My Mobile” and “Reactivation Lock” anti-theft features to protect the soon-to-be-released Galaxy 5 S.

The features that will lock the phone if there’s an unauthorized attempt to reset it will be on models sold by wireless carriers Verizon and U.S. Cellular. The phones go on sale next week.

“Samsung takes the issue of smartphone theft very seriously, and we are continuing to enhance our security and anti-theft solutions,” the company said in a statement.

The announcement comes as San Francisco District Attorney George Gascon, New York Attorney General Eric Schneiderman and other U.S. law enforcement officials demand that manufacturers create kill switches to combat surging smartphone theft across the country.

Earlier this week, California legislators introduced a bill that, if passed, would require mobile devices sold in or shipped in the state be equipped with the anti-theft devices starting next year — a move that could be the first of its kind in the United States. Similar legislation is being considered in New York, Illinois and Minnesota, and bills have been introduced in both houses of Congress.

In July, Samsung officials told Gascon’s office that the major carriers were resisting using kill switches. However, Gascon and Schneiderman said in a joint statement Friday that Samsung’s latest move sends a strong message that the wireless industry can work together to make consumers safe. The prosecutors have given the manufacturers a June deadline to find solutions to curb smartphone theft.

Almost one in three U.S. robberies involve phone theft, according to the Federal Communications Commission. Lost and stolen mobile devices cost consumers more than $30 billion in 2012, the agency said in a study.