I work in office with a kind of a cubicle farm arrangement where sound propagates no-problem. When a cell phone not in silent mode rings it can be heard in at least 10-meters range and therefore distracts one-to-several dozens people (me included).
The company claims phones should be in silent mode but many people either forget or don't care so the policy is not fully working. I'm trying to address such cases when they repeat near me too frequently and most of the time just talking to a person really helps.
Yet first of all, I feel quite stupid coming up to a grown-up and explaining to him that his phone ringing hurts mine, his colleagues and company productivity (thank you, Captain Obvious). Also it's quite annoying that there's nothing that would remind of necessity to switch to silent except me coming. And finally sometimes people will persistently bring silly excuses that are beneath all criticism (like "it's strange that it annoys you").
What I'm looking for is a policy that is concise, simple, deals with silly excuses efficiently and can be easily enforced in an office. Is there such a policy already described anywhere?