As mobile phone use and text messaging has continued to play a more central role in people's daily lives, some researchers and clinicians have sought to use the medium as a tool for interventions and data collection. Such efforts have included sending tailored health messages to college students who are trying to quit smoking. This research brief describes the authors' recent efforts collecting daily experience data from college undergraduates at a large midwestern U.S. university through mobile phone text messaging. By daily experience data, they mean data that are collected at multiple points from individuals within their natural context, over a period of time. This approach to data collection provides a way to study phenomena under the conditions in which they naturally occur and to examine how those phenomena progress over time or across contexts.