One memory I have from the big regional church where I started going to church was when a man's phone started ringing in the middle of a sermon. (premierchristianity.com)
When we find calcium and phosphorus in a forensic investigation, alarm bells start ringing because bone contains these minerals. (newscientist.com)
We had a bizarre circumstance where a phone started ringing in a cleaning cupboard. (scientificamerican.com)