This to me is a great portrait of what street photography is all about. Capturing people just as they are. This woman is sitting outside on steps in front of a business checking her cell phone as the world walks by. It is such a simple photo, but I love it.
Despite this shot being on the street, some people get confused at the term "street photography" and assume all photos under that title have to be taken on the street. Not true.
Here is a definition that exist on Wikipedia:
Street photography is an art photography that features the human condition within public places and does not necessitate the presence of a street or even the urban environment. The subject of the photograph might be absent of people and can be object or environment where the image projects a decidedly human character in facsimile or aesthetic. The origin of the term 'Street' refers to a time rather than a place, a time when women achieved greater freedom, when workers were rewarded with leisure time and when society left the privacy of their sitting rooms, people engaged with each other and their surroundings more publicly and therein the opportunity for the photographer.