Law enforcement agencies in California and New York have reported a major drop in iPhone robberies over the first five months of 2014, a shift they attribute to Apple's new Activation Lock feature released as part of iOS 7 last fall.

Activation Lock's crime drops impress cops

New York's Attorney General Eric Schneiderman announced police data revealing a that iPhone robberies in San Francisco dropped by more than a third (38 percent), while New York City has seen robberies and 'grand larcenies from a person' involving an iPhone drop by 19 and 29 percent. In London, Apple-targeted thefts were down by 24 percent.

Schneiderman noted that "preliminary statistics following Apple's adoption of Activation Lock— the first kill switch commercially available in the United States— appear to validate the kill switch as an effective tool to deter smartphone crime."

While thefts of Apple products were down compared to rates prior to the release of Activation Lock, "thefts of other popular mobile devices increased," with New York reporting that "both robberies and grand larcenies from a person involving a Samsung smartphone, another popular device, increased by over 40 percent compared to the first five months of 2013," the group's report noted, adding "other cities experienced the same trend."

A report by the Wall Street Journal said Schneiderman "cited anecdotal information from the New York Police Department that thieves find iPhones less attractive because of the kill switch."

SOS initiative targets smartphone thefts

Last summer, Schneiderman joined San Francisco's District Attorney George GascÃ³n in launching an "Secure our Smartphones," an effort to fight back against "an epidemic of smartphone theft and related violence." The group has since gained support from London Mayor Boris Johnson and "a coalition of more than 100 elected leaders, attorneys general, consumer advocates, and top law enforcement officials from major cities."

In view of the alarming fact that "in 2013, a mobile device played a role in roughly half of all robberies in New York City, San Francisco, and London," the group began advocating that "wireless carriers, mobile device manufacturers and software developers" support the development of "kill switch" technology that could make stolen phones worthless to thieves, However, they found little support in the industry, with trade groups arguing against kill switch legislation as being "infeasible and unwise."

The SOS initiative reported its first milestone reached September 18, 2013, when "Apple unveiled 'Activation Lock,' a kill switch available on all iPhones running the newly released iOS 7 operating system. Prior to its introduction, critics claimed that an effective kill switch was beyond reach. Apple showed not only that a kill switch was possible, but made it available on the most popular mobile device in the market."

Police in New York immediately began advocating that iPhone users upgrade to iOS 7 for the security feature.

In May 2014, Minnesota became the first state to mandate a kill switch on all new smartphones sold by July 2015.

Samsung follows Apple with its own "Reactivation Lock"

In April, Samsung "rolled out its own kill switch, dubbed 'Reactivation Lock,' for certain new Verizon and U.S. Cellular 'Galaxy' devices," the report noted.

"Assuming Samsung makes the kill switch broadly available across all of its devices, and arms the application by default (rather than require a user to 'opt in' to use the application), Samsung thefts would be expected to experience a similar decline," the group addd.

However, Samsung says its Reactivation Lock "activates a special flag set in a secured memory storage area of the device," indicating that specially designed new hardware is required to activate the feature (which differs from the previous "LoJack" solution Samsung previously offered).

Reactivation Lock currently only works on Samsung's latest Galaxy Note 3 and Galaxy S5 high end models, which are only a part of the company's premium phone segment that historically makes up about a third of the volume of smartphones Samsung sells.

Unlike iOS 7, which Apple supports on devices as old as 2010's iPhone 4, Samsung does not offer Reactivation Lock features to its previous generations of Galaxy Note and Galaxy S buyers. Additionally, while iOS 7 doesn't force users to use Activation Lock, Apple makes setting up the service as easy option that's integrated into the user's iCloud account setup. Samsung buries the feature as a setting users must find and configure on their own.

Google, Microsoft offer to match last year's iOS 7 features with an update next year

To avoid losing all smartphone sales to iPhones in Minnesota and other states who impose kill switch laws, Google and Microsoft have also agreed to add an Activation Lock-like feature to "the next version of the Android operating system" and "the next release of its Windows Phone operating system," respectively.

However, while Apple updated virtually its entire installed base of iPhone users within just a few months to iOS 7, Google has only managed to push its Android 4.4 KitKat to less than a fifth of its installed base in the same time frame. Microsoft also has a poor track record in delivering updates to its installed base of previous smartphone buyers.