BIG Launcher makes the smartphone accessible to seniors, children and people with vision difficulties. BIG Launcher provides a simple and easily readable interface for Android Smartphones.BIG Launcher has icons for different functionalities and texts with large size and high contrast. This interface is easily customizable according to the preferences of each user.The basic functions of the phone such as calls, messages, camera, calendar or image gallery are easily identified and simplified. It also has an SOS button to perform emergency calls to a previously selected contact. BIG Launcher facilitates the interaction of Talback screen reader for a correct reading of all functionalities.