Question I keep getting an unidentified sound that doesn't seem to be a notification

[Embee19]

Recently, my Samsung A13 with the stock OS and the latest updates started periodically making a sound I've never heard before. It sounds very much like an electronic version of a house key being dropped into a shot glass. I have a notification history app, but nothing appears in that list anywhere near the time the sound is heard.

I can't detect anything going on near the time it is heard. It occurs at seemingly random times, often waking me up even with the general sound volume set low. I can't turn off the phone's sound completely because I need my Dexcom G7 diabetes monitor running at all times to warn me of problems. I tried uninstalling the Dexcom app temporarily to see if it was producing the sound, but it still sounded apparently randomly. I also looked at what apps I had installed before the sound began, but nothing seemed to match up.

Does anyone have any ideas as to what might be causing this annoying sound, please? Thanks!

 

[belodion]

I’ve heard about that but can’t now remember the details. Some gambling app or something. I’ll mention this to the volunteer team, one of whom will no doubt know. Stand by.

 

[B. Diddy]

Does it persist if you turn off NFC?

 

[mustang7757]

Try downloading Nice Catch from Galaxy play store and see after about 24hrs if it caches anything around that time

 

[belodion]

A sports news app or service is dimly remembered.