Hi! I understand you switched iPhones and now the YI Home app you had is showing as no longer available. Let me help you get this sorted out.

Could you please tell me if you are trying to download the YI Home app fresh from the App Store on your new iPhone, and what exact message you see when you try? Also, do you recall if you ever had to switch to a different app like YI Life or anything similar before?

While I wait for your details, here are some steps that usually help in these situations:

1. Check App Availability in Your Region
Sometimes the YI Home app might not be available in certain regions or countries on the App Store. If you are in a region with restrictions, this could be why it doesn’t show up.

2. Try Searching for “YI Life” App
Some users have been prompted to switch from YI Home to YI Life, which might be its successor app. However, availability can differ across regions and devices.

3. Verify Apple ID Store Region
Ensure the region on your Apple ID matches the region where the app is available. If it doesn't, changing the region temporarily can allow you to download the app.

4. Reinstall and Restart
If you previously had the app via your Apple ID’s purchase history, try reinstalling it from there rather than searching directly.

5. Contact Support or Use Alternative Apps
If none of these work, the app might have been removed or temporarily unavailable for iOS users in your region. This has happened before, with developers working to resolve it.

If you want, I can help you check if your Apple ID region aligns or walk you through any of these steps. Also, if the app was already on your old iPhone, you can check the purchase history or offloaded apps list. Let me know more about the message you get or the exact problem you see when trying to use or reinstall the app!

Does this make sense so far? How would you like to proceed?