It does seem that cell phone use is one of the biggest issues in the classroom these days. I know that I do make it a point to address cellphone use and ask students to put them away, turn them off, etc. - If students use them, I remind them - but it seem like I become known more for cell phone policy than other things - such as what I am teaching, etc. It is frustrating and I have not found a way to deal with it. I have never taken a phone away but when students ignore the rule and use their cell phones, I have asked them to leave. It is probably one of the major causes of arguments between myself and students and as I said is very frustrating. I would love to hear what others do. We are dealing with adults, but it seems that so many people just don't know approproate use of this new technology in a social setting such as a a classroom.