The harm of playing mobile phone while having dinner

My sister is going well with me.She always invites me to dinner outside.But she has a bad habit while having dinner,that is ,she always likes to play mobile phone.Last week,she was having dinner with me in the restaurant.She still played mobile phone as usual.I persuaded her not to play mobile phone.But she didnt hear my word.Suddenly,she found some funny information on the mobile phone.She started to laugh,but she was eating fish on that moment.So unluckily,she was choked by the fishbone.She was unable to spit it,so I went to the hospital with her.Since from now on,she never plays mobile phone when having dinner.