7. Don’t leave a tip.
Unlike in the U.S. where tipping is mandatory, Japan does not have a tipping culture, and leaving a tip may even be taken as an insult. Service is included in the bill at restaurants, and even taxi drivers will refuse to have a fare rounded off. Leave a few coins on the table and the waiter will surely run after you to return your forgotten change!
8. Avoid loud phone conversations while on public transit in Japan.
The Japanese tend to use their mobile phones discreetly and will keep telephone discussions brief and as quiet as possible when in public. When traveling on public transit, many people are busy using their phones to text, listen to music, watch videos, or read, but telephone calls are very rare. If you have to use your phone in a public area, move to a quiet place with few people around.