Switch Phone to Silent Mode
Always ask for permission if you want to use your mobile phone within the work premises. Avoid making or answering calls and speaking in a loud voice in front of elevators or at public places since this is where you will likely meet clients of your company. Phone ringing is also considered to be rude here in Japan as there are a lot of people trying to concentrate on their work so be sure to put it in silent mode.
If you keep checking on your phone while at work, it would seem that you are neglecting your duties and tasks so be sure to watch how frequent you use it.
