Mobile Storage 1 story

Mobile Storage sits inside the wider Mobile Device Features landscape but has a technical role specific enough to merit separate coverage. Coverage uses smartphone internal storage, UFS storage, eMMC storage phones, and mobile flash memory to explain function, setup, support boundaries, and interactions with the rest of the platform. This keeps Mobile Storage narrower than Mobile Device Features as a whole while giving readers enough context to make configuration or compatibility decisions and recognize when a problem-specific tag is more appropriate.