Product design question
Design a cell phone for a two year old.
- Microsoft
- Product design
- Medium
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What this question tests
Tests product design under strict developmental and safety constraints for a non-typical user with no reading ability and minimal fine motor skill.
How to approach it
- Clarify the goal: this is likely a parent-facing toy or educational device rather than a functional communication phone, given the age.
- Identify constraints: a 2-year-old can't read, has limited fine motor control, and mouths objects, so no small parts and only simple large-button interaction.
- Identify the core job: safe, engaging pretend play that mimics a phone for imitation-based learning, plus optional parent-supervised features like pre-recorded voice messages.
- Propose a durable, chew-safe toy phone with large soft buttons triggering sounds, songs, or a pre-recorded call-to-grandma voice clip, no screen or internet connectivity.
- Address safety: no small removable parts, no battery access without a tool, and materials meeting toy safety standards.
- Define success: engagement time during independent play, and parent-reported comfort with safety versus a real phone as a distraction tool.
What a strong answer includes
- Correctly reframes the brief as a toy or developmental product, not a functional smartphone, matching the real user's capability at age two.
- Names concrete safety constraints, choke hazards and battery access, specific to toddlers, not generic make-it-safe language.
- Proposes a specific imitation-play mechanism, pretend voice calls to family, grounded in real toddler developmental behavior.
- Defines success with both an engagement and a safety-trust metric, reflecting both the child and parent as stakeholders.
Common mistakes
- Designing a scaled-down real smartphone with a screen and apps, ignoring the toddler's actual developmental stage and risks.
- Ignoring toy safety standards and choking hazards, a critical constraint for this age group.
Likely follow-up questions
- How would this design change for a 4-year-old versus a 2-year-old?
- How would you validate engagement without relying purely on parent self-report?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop