From the Saline Schools, right here in Michigan, comes a video about how teachers and students are using cellphone in the classroom to enhance teaching and learning. Check it out
How not to conduct research
Note: This post has been edited somewhat to (a) clearly hide the url, which I had not done a good job of before; and (b) to add a few suggestions in the last paragraph for some strategies to make it easier for the participants to take part in the study. (September...
I would say that cell phones should not be allowed in classrooms.