my iphone XR does not provide clear phone connections.

Hello, roger2382.

Are you experiencing poor audio quality on your calls? If so, these steps can help: If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support.

Or is the issue that your calls are not able to stay connected, due to poor cellular connectivity? If so, try this instead: If you can't make or receive calls on your iPhone - Apple Support.

Let us know if we can help with anything else at all or if this doesn't settle your issue so we can look into this further with you. Thanks and have a fabulous day!