Mobile phone users must be conscious of their phone's settings wherever they go, and are required to adjust settings such as ring volume and vibration depending on the surrounding environment. This research paper introduces SenSay, an intelligent mobile phone system developed at Carnegie Mellon University that is designed to eliminate the constant attention required by current mobile phones. "It adapts to dynamically changing environmental and physiological states and also provides the remote caller information on the current context of the phone user." The paper outlines the capabilities of SenSay and provides details of the system architecture and implementation.