Phone alarms (ringing) when fully charged

"Phone alarms (ringing) when fully charged: After upgrading to iOS 18.3 my phone starts ringing when fully charged in my car. I haven't tried anywhere else yet."

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iPhone Ringing and Gong Black After an Update:

A. Force Restart While Connected:

Something may be stalled, so Force restart iPhone - Apple Support

B. Restart your iPhone:

Having just updated, restart your iPhone --a restart after an update is best for all devices: Restart your iPhone - Apple Support

C. Clear the Caches:

Caches are created for app remembrance so that it can run once again nice and quick:How to Clear "System Data" in your iPhone's Storage: - User Tip

Expressing or conveying auditory experiences effectively through these forums may be challenging. The underlying sound issue on your iPhone cannot be accurately diagnosed online. Factors such as your iPhone's specific sound settings, defects, and potential hardware problems cannot be assessed through this method. For more personalized and in-depth assistance, I recommend securing a Genius Bar Reservation and exploring the various support options provided by Apple.

Get a Genius Bar Reservation and Apple Support Options - Apple

When you encounter issues with your Apple devices, the Genius Bar at Apple Retail Stores is the go-to place for expert assistance. The Genius Bar is staffed by knowledgeable Apple employees, often referred to as "Geniuses," who can diagnose and resolve a wide range of hardware and software-related problems. To ensure personalized attention and a convenient visit, Apple provides the option to schedule a Genius Bar Reservation.

Contact Genius Bar.

Manage Reservations - My Reservations - Apple

Restart your iPhone or iPad. · Make sure your screen is clean and free of any debris or water. · Disconnect any Lightning or USB-C accessories.

If the screen isn't working on your iPhone or iPad