That means, phones with components that can be be easily removed and changed to make new phones that is like building a very own smartphones with personal touch. “The design for Project Ara consists of what we call an endoskeleton (endo) and modules. The endo is the structural frame that holds all the modules in place. A module can be anything, from a new application processor to a new display or keyboard, an extra battery, a pulse oximeter--or something not yet thought of” says Motorola about the new phones that will come as part of the project.