Japan is the one of the country that being strict about using cell phone manner in public.
・You should switch your phone to “manner mode” in quiet places like hotel lobbies and restaurants to avoid bothering people around you.
・You should switch your phone to “manner mode” when inside a Shinkansen (bullet train) and trains and avoid talking on the phone. If you absolutely need to talk on the phone, it is best to get off at a station and talk on the station platform. Also, you are expected to turn the phone completely off when near the priority seats to avoid problems with pace makers, etc.
・Turn off the power at places like theatres, movie theatres, and museums.
・Always turn off the power in restricted areas like airports and hospitals.
・Don’t talk on the phone while driving. This is prohibited and punishable by the law.