Abstract: A cell phone activation circuit that includes an activation cable electrically connectable to an alarm output of a vehicle alarm system; a pager mode integrated circuit having a dual tone telephone tone generator and sufficient programmable pager phone number memory to store a pager number; a cell phone mode integrated circuit having a digital to analog audio generating circuit a dual tone telephone tone generator a programmable phone number memory of sufficient size to store a contact phone number, and an audio message memory having an digitized audio message stored therein; a number entry keypad in user selectable connection with the programmable pager phone number memory and the programmable phone number memory; a selector switch wired in connection with the pager mode integrated circuit and the cell phone mode integrated circuit in a manner to allow a user to selectively enable operation of the pager mode integrated circuit and the cell phone mode integrated circuit; a cell phone power on control line out