In my chest pocket. It's on silent mode, in a plastic bag to keep it scent proof. Yessss, I'd love to leave it behind so that I may fully enjoy nature, listen to the woods come to live, etc...., BUT just like we love to have any advantage available to beat deer's noses (scent spray, wafers, carbon suits, etc.), the cell phone is a great advantage to be available to what I FEEL IS MORE IMPORTANT THAN hunting - my wife and children. Emergencies do happen, and if the cell phone can help, then there you have it. Besides, if you are a big hunter, other hunters won't be bugging you, co-workers, your boss, and/or employees should know better. Finally, if you are using the phone for other reasons, stay home.
"Perseverance, Practice, Integrity"