Your question is Shipping a Cross-Functional Mobile Feature. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you had to collaborate closely with design, product, and backend to ship a mobile feature. What was challenging about the cross-functional work, how did you align the team, and what was the outcome?