When I record video or do FaceTime there is actually static the whole time.
I attempted the following with no change in results:
- Restarted iPhone
- Insert headphones in/out
Headphone jack appears to work fine, as I was able to record a video with proper audio using the headphones.
I submitted issue to Apple, but since it is after business hours, I'm going to attempt something else. Next step for me: factory reset phone and do a manual setup rather than restore from previous backup.