  Accessibility assessments typically focus on determining a binary measurement
of task performance success/failure; and often neglect to acknowledge the
nuances of those interactions. Although a large population of blind people find
smartphone interactions possible, many experiences take a significant toll and
can have a lasting negative impact on the individual and their willingness to
step out of technological comfort zones. There is a need to assist and support
individuals with the adoption and learning process of new tasks to mitigate
these negative experiences. We contribute with a human-powered nonvisual task
assistant for smartphones to provide pervasive assistance. We argue, in
addition to success, one must carefully consider promoting and evaluating
factors such as self-efficacy and the belief in one's own abilities to control
and learn to use technology. In this paper, we show effective assistant
positively affects self-efficacy when performing new tasks with smartphones,
affects perceptions of accessibility and enables systemic task-based learning.
