Text Notification Sound Query

[Prudie]

On TV progs and adverts you regularly see bubble text going back and forth between the participants on a screen with the accompanying notification noise - I want to know what that device is that uses that noise !! Going to be hard to explain a sound, OH said it's not on his iPhone and I don't have it on Hauwei either.
One poster goes oo-oo with the second oo up a tone or so
The reply is also oo-oo but the second tone is down a tone or so
There is one ad using it at the moment but it features a lot particularly in US films showing messages between teenagers.
?

[pixie374]

Is it the one used on Black Mirror? One sound is sending and one is receiving... but not sure which phone, sorry.

[sunny-dave]

[pixie374]

Xiaomi's Bezel-Free Mi Mix

[Prudie]

Sorry Pixie, never watched Black Mirror and your 2nd post is a mystery?
Dave, husband went through all his iPhone 6+ text notification choices and it wasn't there. I have also just been through my work iPhone options as well. Lots of choice of sounds but not this particular one.
It's coming up in a current TV advert, I'll try to take note what it's for so I can post it.

[pixie374]

I googled which phones they used, which made those sounds, but Dave's looks more likely!

[bednobs]

I get different noises if the app is open and when it's closed. Try sending him a text while he has text messages open

[Prudie]

Thanks so far although I'm none the wiser. My daughter suggests it's a tone available on Apple Messenger (their version of whatsapp) but neither of us have it installed....