An attachment system is disclosed which employs a main set of attachment elements attached to a case for a mobile computing/communication device, such as a mobile phone, computing tablet or other mobile computing and/or communication device. These attachment elements are connected to, or built into another mobile computing/communication device. This allows the mobile devices to be connected back to back to allow simultaneous use of both, front to back to protect the screen of one while using the other, or front to front to protect both screens when neither is being used. Also, it may be embodied as a docking structure which is fixed to a wall or other structure. The mobile device removably attaches to the docking structure to hold the phone for use and/or storage.