every once in a while my galaxy z fold 7 makes an chirping bird sound while its locked, when i open it i dont ses nothing, also i checked notifications history , nothing detected!whats that?!

since the last two updates, im having a problem with mic gain, when recording and calling it not load enoughtried every thing no use, just updated to latest softwareUpdate information• One Ul version: 8.0• Android version: 16• Version: F966BXXU4AYI1...

i hear notification sounds but nothing appears, and i checked the notification history and nothing alsoits annoying, how can i disable it

when turning of the sounds of whatsapl from the operating system, it returns again!