Dr.Web Anti-theft is not equipped with a kill switch that would render the device non-operational. It can only wipe all the user information (after receiving the corresponding SMS command, or automatically, after 10 failed password-entry attempts if the Remove data option was on). At the same time, if Dr.Web does not have administrator rights on the device, it will not be able to reset all the settings and delete the installed applications, so the smartphone will remain locked. But, overall the device will remain operational.