Had a similar thing happen to my brother. I took him bowhunting first time ever, he had 2 big does come in, got the bow and was just about let one fly when his phone (vibrate) went off and he missed @ 25yd. It was his wife!!! He was so angry, it was funny. Later on he said that when the phone went off it was like turning on one of those old arc welders
I allways have my phone on sillent and look at it once in a while or play games on it when things are slow.