Good day to you taco_bandit,
Let’s isolate the situation some -
Can you test another Bluetooth device with your iPhone during a FaceTime call? Does the same thing happen? This way we can know if the situation is specific to your Bluetooth headphones or the device.
Here are a few basic troubleshooting steps to get us started -
• If you haven’t already, restart your iPhone and test again - Restart your iPhone
• Make sure your iPhone is up to date with iOS 16.2 - Update your iPhone or iPad
• Make sure the firmware for your Bluetooth device is up to date. If we’re working with AirPods, here’s how - About firmware updates for AirPods
Find your AirPods firmware version
Firmware updates are delivered periodically while your AirPods are charging and in Bluetooth range of your iPhone, iPad, or Mac.
Because firmware updates are delivered automatically, you don't need to update your AirPods.
To use your iPhone or iPad to check that your AirPods are up to date, make sure that you have the latest version of iOS or iPadOS. Go to Settings > Bluetooth, then tap the Info button next to the name of your AirPods. Scroll down to the About section to find the firmware version.
To use your Mac to check that your AirPods are up to date, make sure that you have the latest version of macOS. Press and hold the Option key while choosing Apple menu > System Information. Click Bluetooth, then look under your AirPods for the firmware version. With macOS Ventura, you can also choose Apple menu > System Settings, click Bluetooth, then click the Info button next to the name of your AirPods.
Thanks.