The number of smartphone users and mobile application offerings are growing rapidly nowadays. A mobile device is currently considered as the most powerful and most needed device of this modern century. Every day new mobile applications are developed with their own compatibility, making sure to serve correctly to a particular smartphone model and its specifications. The goal of this project is to develop a self-help Android application namely “Dont Forget Me”, which is user friendly and well defined to solve the problem of misplaced or lost smartphone devices. This missing phone prevention alert application practically pairs with another device using Bluetooth connection. The Bluetooth connection is established in order to prevent the user from forgetting to bring along the device or being stolen by someone. If the Bluetooth connection between the paired devices is disconnected hence an alarm and message notification are triggered to notify the user that the device was not brought along with them. A website application is also developed purposely in serving the user to track, locate and lock the missing device.