This article reports the results of a survey of cell phone policies in university libraries conducted over a three-month period in 2005. The authors sought information about the libraries' problems regarding cell phone use and attendant noise by students and other library users. The authors began with an 18-question survey of one hundred libraries, with at least one library from every state. When the response was low, the authors expanded their research by looking at every library Web page that had the word "University" in its title. Finally, they contacted several larger libraries that had policies banning cell phone use altogether to see whether they worked. Most respondents found cell phone noise a problem. Most respondents indicated that public service staff and security officers enforced the policies; comments from the original survey were insightful concerning compliance solutions. (Contains 3 figures.)