Embodiments of the present disclosure relate to a method and system for remotely and automatically erasing information stored in SIM card memory and mobile phone memory including memory card of a mobile phone 101. The method includes sending a voice message comprising predetermined authentication parameters to a server 102 by an owner when the mobile phone 101 of the owner is lost. The method further includes authenticating the owner by the server 102 upon comparing the predetermined authentication parameters with the stored authentication parameters and sending activation signal by the server 102 to an erase application if the owner is authenticated. This signal will activate the erase application stored in the mobile phone 101 SIM card. The erase application generates destroy signal upon activation of the erase application to erase the information stored in the SIM card of the mobile phone 101.