If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which task were you trying to complete on your phone?
Was any control or text difficult to use?
What would you prefer to do later on a larger screen?
Was it easy to resume the task after an interruption?
Which action needed a larger touch target?

Author notes / illustrative keys where applicable:
1. Identify the task and its mobile context without requesting precise location or unrelated device information.
2. Separate readability and touch-control issues from the underlying task's complexity.
3. Find work the respondent would move to a larger screen without assuming every task should be optimized for mobile completion.
4. Check whether interruption loses context, progress, or confidence; these require different design responses.
5. Name a control that was difficult to tap rather than asking only for a general mobile satisfaction rating.