Hi there! I see you're experiencing the white spinning circle issue in the GarageBand app on your iPhone. Just to clarify, does the white circle keep spinning when you try to open the app, or does it spin after you select an instrument or load a project? Any additional details about when this happens will help me guide you better.

Meanwhile, here are some troubleshooting steps we can try to resolve the issue:

1. Force Close GarageBand and Restart
- Double-click the Home button (or swipe up from the bottom on newer iPhones) to open the app switcher.
- Swipe up on GarageBand to close it completely.
- Restart your iPhone by holding the side button and volume button until you see the slider to power off, then turn the device back on.
- Reopen GarageBand and see if the spinning circle still appears.

2. Check for App Updates
- Open the App Store, tap your profile icon on the top right, and scroll to see if there’s an update available for GarageBand. Updating may fix bugs causing the load issue.

3. Free Up Device Memory
- Since loading issues can sometimes relate to low device resources, try closing other background apps or freeing space by deleting unused files or apps.

4. Reinstall GarageBand
- Since you have already tried uninstalling and reinstalling multiple times, please ensure after deleting the app, you restart your iPhone before reinstalling to clear any temporary data.

5. Check Network Connection
- Sometimes GarageBand needs to access cloud libraries or sound packs. Confirm your Wi-Fi or cellular connection is stable.

6. Test With a New Project
- If the spinning happens when opening a particular project, try starting a new project to see if GarageBand loads correctly.

If after trying these steps the white circle keeps spinning endlessly, there might be an issue with corrupted GarageBand data or a bug.

Would you be willing to try these steps and let me know how it goes? Also, is your iPhone currently using any VPN or device management profiles that might affect app permissions? That info can help identify deeper issues.

Looking forward to hearing from you!