Cell Phones in the Classroom

The topic I chose to research is the use of cell phones in the classroom. I am not fully convinced this is a good idea. Some ideas seem to work, but I am scared on how you would be able to monitor cell phones to ensure your students were not doing anything inappropriate. The reason most schools do not allow them in the first place is because students have been caught cheating by sending pictures of tests to other students. While researching this topic, I am curious if people have found ways of monitoring cell phone use strictly for the classroom.