  Smartphones are now ubiquitous, yet our understanding of user interface
factors that maximize mobile user experience (UX), is still limited. This work
presents a controlled experiment, which investigated factors that affect the
usability and UX of a mobile incident reporting app. The results indicate that
sequence of user interface elements matters while striving to increase UX, and
that there is no difference between tab and scrolling as navigation modalities
in short forms. These findings can serve as building blocks for
empirically-derived guidelines for mobile incident reporting.
