This issue with the 'Prepare iOS for Recording' setting resulting in low sound volume on iPhones is intriguing. It highlights the intricate balance between software functionality and hardware performance in Apple devices. As someone working in iPhone repair at Fixsquad, I've seen various instances where software updates or app settings can unexpectedly affect hardware performance, like audio output. It's always fascinating to see how software changes can impact the user experience on different models, from the iPhone 4s to the iPhone 5. In the repair world, understanding these nuances is crucial for diagnosing and fixing such issues effectively.