Mobile App Design Mobile App Design 3 — Questions and Answers
Question 1: What is 'thumb zone' in mobile design?
- The area of the screen reserved for system notifications
- The comfortable reach area for one-handed thumb interaction on a smartphone (Correct answer)
- A haptic feedback region near the bottom bezel
- The safe area inset at the bottom of notched devices
Correct answer: The comfortable reach area for one-handed thumb interaction on a smartphone
The thumb zone describes the screen regions that are easy, okay, or hard to reach with one thumb, guiding placement of primary actions.
Question 2: In Material Design 3, which component is used to display brief, non-intrusive messages that disappear automatically?
- Dialog
- Snackbar (Correct answer)
- Banner
- Tooltip
Correct answer: Snackbar
Snackbars provide brief feedback about an operation at the bottom of the screen and disappear after a short timeout.
Question 3: What is the key difference between 'onboarding' and 'first-run experience' in mobile apps?
- They are identical concepts used interchangeably
- Onboarding covers the entire new-user journey; first-run experience refers only to the initial launch screens (Correct answer)
- First-run experience includes push notification prompts; onboarding does not
- Onboarding is for Android apps; first-run experience is an iOS term
Correct answer: Onboarding covers the entire new-user journey; first-run experience refers only to the initial launch screens
Onboarding encompasses the full process of orienting new users, while first-run experience typically refers specifically to the initial app launch screens.
Question 4: Which pattern is best suited for switching between parallel, peer-level content sections in a mobile app?
- Accordion
- Tab bar (Correct answer)
- Stepper
- Breadcrumb
Correct answer: Tab bar
Tab bars allow users to switch between peer-level content sections without losing their place in each section.
Question 5: What does 'haptic feedback' primarily improve in mobile UX?
- Visual hierarchy and readability
- The sense of physical confirmation for touch interactions (Correct answer)
- Battery life by reducing screen brightness
- Network performance through compression
Correct answer: The sense of physical confirmation for touch interactions
Haptic feedback provides tactile confirmation of actions, reinforcing the feeling that a tap or gesture was registered.
Question 6: When should a designer use a modal dialog versus a bottom sheet on mobile?
- Modal dialogs are for iOS; bottom sheets are for Android only
- Modal dialogs are best for critical decisions requiring immediate attention; bottom sheets work well for contextual actions or supplementary content (Correct answer)
- Bottom sheets replace all modal dialogs in modern mobile design
- Modal dialogs should be used for all forms of input collection
Correct answer: Modal dialogs are best for critical decisions requiring immediate attention; bottom sheets work well for contextual actions or supplementary content
Modal dialogs interrupt the user for critical decisions, while bottom sheets surface contextual options without fully blocking the background content.
Question 7: What is 'affordance' in the context of mobile UI design?
- The cost estimate for app development
- A visual or tactile cue that suggests how an element can be interacted with (Correct answer)
- The accessibility settings available on a device
- The amount of storage space an app requires
Correct answer: A visual or tactile cue that suggests how an element can be interacted with
Affordance refers to design cues—like button shadows or underlined links—that signal how users can interact with an element.
Mobile App Design Mobile App Design 3
What is 'thumb zone' in mobile design?