It seems you're asking about a hardware category that doesn't quite exist in the way you've described it. "Phone stores the hanging board" isn't a standard hardware category. It's possible you're referring to:
- Retail store displays: These are fixtures used in stores to showcase products, often incorporating elements like shelves, hooks, and boards. They might be used to display phones, but "hanging board" isn't a standard term for these displays.
- Phone cases: These are protective coverings for phones that often come with features like kickstands, which can function as a stand to prop the phone up.
Could you clarify what you meant by "phone stores the hanging board"? Providing more context or specific details will help me understand your request and provide an accurate description.