One or more systems and methods are disclosed to provide secure transmission of signals by a primary wireless communication device that utilizes a secure multi-tier signal encryption mechanism. A secondary signal encryption mechanism of a secondary wireless communication device generates an intermediary algorithmic output required in the encryption processing at a primary signal encryption mechanism of a primary wireless communication device. In one embodiment, the secondary signal encryption mechanism comprises a subscriber identity module (SIM) card. In one embodiment, wireless signal transmission occurs over a GSM/GPRS/EDGE network.