i would clean up your internet usage (mainly bbsing) before i would worry about what is being sent from your work phone. if a company is going to be upset about something it would first be the fact that you use their computer to bbs while youre at work. thats billable time going to waste*... the phone stuff, as long as it isnt super inappropriate, at least isnt on works time. as someone mentioned earlier, most of the time if they are going through your phone for inappropriate things, youve already been fired...
*by waste i mean good use, of course