iPhone X chirping and Rewards Pending Message
Has anyone else's iPhone being making a random, loud chirp noise with no clear source? It seems be accompanied by a message in the control center's music widget that says you have a "reward pending". This just happened to me for the first time and it went away before I could do anything. I found these posts about it but it seems like it should be getting more attention.
https://www.reddit.com/r/iphone/comments/9z6oaw/reward_pending/
https://discussions.apple.com/thread/8516722
Thoughts?
iPhone X, iOS 12