etiquette

Although I have a smartphone, I am not a particularly heavy user of the technology.  Thus, I was surprised to learn of a new smartphone phenomenon called "phubbing" from a research article entitled, "When phubbing becomes the norm."  

In the article, the term is defined in this wise:

The term “phubbing” represents the act of snubbing someone in a social setting by concentrating on one’s phone instead of talking to the person directly.