Lose all maps favorites except home everytime I turn off iPhone since I applied iOS 16.5.1

If you're experiencing the issue of losing your Maps favorites, specifically the favorites except for your home location, every time you turn off your iPhone, there are a few troubleshooting steps you can try to resolve the problem:

1. Since Maps favorites are synced through iCloud, signing out and then signing back into your iCloud account might help resolve the problem. Go to Settings > [Your Name] > Sign Out. Afterward, sign back in using your Apple ID and password.
2. Resetting the location and privacy settings on your iPhone can sometimes help resolve issues related to location-based apps. Go to Settings > General > Reset > Reset Location & Privacy. Keep in mind that this action will reset your location and privacy settings to their default values, so you may need to reconfigure certain preferences afterward.
3. Sometimes, a simple restart can resolve temporary software glitches. Turn off your iPhone, wait for a few seconds, and then turn it back on.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support
4. If the issue persists, you can try resetting all settings on your iPhone. This will not erase your data but will reset all personalized settings to their default values. Go to Settings > General > Transfer & Reset > Reset > Reset All Settings and confirm the action. Note that you will need to reconfigure your settings afterward. All settings—including network settings, the keyboard dictionary, the Home screen layout, location settings, privacy settings, and Apple Pay cards—are removed or reset to their defaults. No data or media are deleted.
   1. Reset All Settings: Return iPhone settings to their defaults - Apple Support:- Return iPhone settings to their defaults
   2. You can return settings to their defaults without erasing your content.
   3. If you want to save your settings, back up your iPhone before returning them to their defaults. For example, if you’re trying to solve a problem but returning settings to their defaults doesn’t help, you might want to restore your previous settings from a backup.
5. Make sure you have the latest updates installed.
   1. Update Over-the-Air (OTA) —> Update your iPhone or iPad - Apple Support (IN)
   2. Update using iTunes/Finder —> Update your iPhone, iPad, or iPod touch - Apple Support (IN)

If none of the above steps resolve the issue, it is recommended to reach out to Apple Support or visit an authorized service center for further assistance. They can provide specific guidance based on your device model and iOS version.