I recommend that you look at the discipline referrals for the current school year and analyze the number of students you wrote up and the infraction for which you wrote these students up. If you wrote up 20 students for texting on their cellular telephones in class, maybe you need to revise your classroom policy on use of electronic equipment. It may be that you need to implement more stringent consequences for students who are caught texting.
For example, if a student is caught texting, you may choose to have that student write a persuasive essay to other students on why he or she should not text in class. Give the student a couple of days to complete the assignment, and if he or she does not complete it, write the student up for texting and for disobedience. I highly recommend that you grade the assignment so that it will not be considered punishment work.