I think important about mobile telephone rules. For example, there are priority seats in the train. We should turn off mobile telephones there for ill persons there. There are possibilities a lot of influence. Also, we should put the mobile telephone into silent mode in the library because a library is a place to read the book and study. Therefore we should be gently there. Mobile telephone rules are common knowledge, so all of the person, cooperation that connect the road to peace. Mobile telephones are convenient things, if we follow rules. A lot of rules are very important.