Strange notification

Hello everybody,
since yesterday or so, I noticed "new" audio notifications. I hear them at a random rate, sometimes two or tree time consecutively, spaced by several minutes each time...
This happen even if I disable ALL notifications, and even in "mute" mode !
I haven't installed any new applications since several days however...
Also, I remarked one strange thing: when I look a video on youtube, as soon as theses strange notifications ring, youtube pause and replay right way !
However, they disappear when in plane mode.
I didn't find any audio file related to them.
So, what is that ????????
Your help would be appreciated.

Originally Posted by pascal06

Hello everybody,
since yesterday or so, I noticed "new" audio notifications. I hear them at a random rate, sometimes two or tree time consecutively, spaced by several minutes each time...
This happen even if I disable ALL notifications, and even in "mute" mode !
I haven't installed any new applications since several days however...
Also, I remarked one strange thing: when I look a video on youtube, as soon as theses strange notifications ring, youtube pause and replay right way !
However, they disappear when in plane mode.
I didn't find any audio file related to them.
So, what is that ????????
Your help would be appreciated.

Sounds like a weather app notification

Originally Posted by SteinwayTransitCorp

Sounds like a weather app notification

Hello,
Thanks for your reply. I don't think, because I haven't this kind of ap.
However, I think this is closely related to data: it appear when wifi or data are enabled, no in other cases.

Originally Posted by pascal06

Hello,
Thanks for your reply. I don't think, because I haven't this kind of ap.
However, I think this is closely related to data: it appear when wifi or data are enabled, no in other cases.

Sounds like a notification when the phone switches back and forth.

Amazing: without neither explanation nor intervention from myself, the problem has disappeared. Crazy !