Your question is Advanced Mobile Debugging and Profiling. 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 your experience with advanced iOS or Android debugging and profiling tools.
Discuss the tools you have used, what each one measures or reveals, and how you choose the right tool for a difficult performance, memory, rendering, or concurrency problem. Include one concrete investigation, describing the evidence you collected and how you distinguished a code defect from normal platform behavior.
Keep the answer focused on native Android and iOS tooling, including tools such as Android Studio Profiler, Perfetto, LeakCanary, Xcode Instruments, and the Main Thread Checker.