SIM LOCK FOR MULTI-SIM ENVIRONMENT

An apparatus with a memory and computer program code configured, with a processor, to start an application; to read a file from a first subscriber module and to determine if there is an active subscriber module lock of the first subscriber module; in response to determining that there is an active subscriber module lock of the first subscriber module executing the application; otherwise if it is determined that there is not an active subscriber module lock of the first subscriber module, to determine if there is an active subscriber module lock of a second subscriber module and continuing until an active subscriber module lock of another subscriber module is determined, and then executing the application using that subscriber module having the active subscriber module lock, otherwise terminating the method without executing the application if no active subscriber module lock of any other subscriber module is determined to be present.