Cell Phones in the Classroom?

In this day and age you would almost expect all schools and districts to have clear guidelines surrounding the use of personal devices such as cell phones, ipods, etc. in the classroom. While I am sure these policies exist somewhere, I could not find any information posted on my district or school websites nor do I remember having any conversations around this issue as a staff. However, I can assume that most cell phone policies would limit cell phone use to before and after school only. During school hours cell phones would be required to be turned off and would need to remain in student’s backpacks.
As a first grade teacher I agree with this policy or am impartial. I am sure some of my students have cell phones but not all. Honestly I have yet to see one of my students with a cell phone or even hear them talk about them. This tells me they aren’t feeling too deprived by this ban on technology. Even for my district as a whole K-12, I think this policy is appropriate for now until the district can provide funding for cell phone use in the classrooms and/or teachers are more educated on the educational uses and benefits of cell phones. Once all this happens I think the policy will need to be changed. It will need to be crystal clear so the learning environment is protected and so the expectations and consequences are known to students.