To resolve the issue of the Garmin Pilot app being frozen on your iPhone, follow these detailed steps:

1. Force Close the App:
- From your Home screen, quickly press the Home button twice to show your recently used apps.
- Swipe up on the Garmin Pilot app preview to close it completely.

2. Restart Your iPhone:
- Press and hold the Power button (and the Volume Down button on iPhones without a Home button) until you see the slider.
- Slide to power off the device, then wait a few seconds before turning it back on. This can help clear temporary glitches that cause freezing issues.

3. Check for App Updates:
- Open the App Store on your iPhone.
- Tap on your profile icon at the top right of the screen.
- Scroll down to see if Garmin Pilot has any pending updates. If it does, tap "Update" to download and install the latest version.

4. Check for iOS Updates:
- Navigate to Settings > General > Software Update.
- If there's a new version of iOS available, download and install it, as updates can fix compatibility issues with apps.

5. Disable Bluetooth:
- Sometimes, Bluetooth connectivity can interfere with the app’s functioning.
- Go to Settings > Bluetooth, and toggle it off. Then, reopen the Garmin Pilot app.

6. Reinstall the Garmin Pilot App:
- Press and hold the Garmin Pilot app icon until it jiggles, then tap the "X" to delete the app.
- Visit the App Store, search for Garmin Pilot, and reinstall it. This can resolve deeper issues that a simple force close may not fix.

7. Contact Garmin Support:
- If none of the above steps work, you may want to reach out to Garmin customer support for further assistance. They can provide tailored solutions based on the specific behavior of the app on your device.

Following these steps should help in resolving the freezing issue with the Garmin Pilot app on your iPhone. If you encounter any difficulties during these procedures, please consult the relevant Garmin support articles or forums for specific case solutions - learn more - learn more - learn more.