Cell phones should not be allowed in school

I really think that cell phones are one of the main reasons some students don't do well in school.  I was way too nice this year in dealing with texting in class.  As a first year teacher I was a bit anxious dealing with this problem.

My plan for year two is to start out very strict.  I will keep this image that I manipulated in Photoshop in mind every time I even see a cell phone.  I need a bit of Darth Vader in me.  :-) (think Captain Morgan ads)

How do you deal with texting in class?