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

Which field was hardest to complete?
When did the keyboard obscure instructions?
What input change would help?

Author notes / illustrative keys where applicable:
1. The hardest mobile field identifies the input interaction requiring closer layout or control review. Record relevant conditions without collecting the entered value.
2. Keyboard obstruction identifies the moment mobile users lose instructions needed to complete a field. Review the layout at that point and available guidance, without assuming one device observation describes all screen sizes or input methods.
3. A proposed input change identifies an interaction to trial on small screens. Compare actual completion behavior without assuming a preference applies to all devices or input methods.