: Signs in hospitals or waiting rooms often use this exact phrase to maintain a calm atmosphere.
While "Silêncio, por favor" is the standard polite request, the phrasing can change depending on the situation: SilГЄncio por favor
Depending on where you are (Brazil vs. Portugal) and who you are speaking to, you might use different variations: How to say SILENCE PLEASE in SPANISH : Signs in hospitals or waiting rooms often