sound after unlock

[c02]

hi!
my new zenfone makes this sound when unlocking. i struggle to turn it off. any ideas on how to do it?
i cannot post links yet, so here it is with spaces added
youtu. be / XfoF8Te7Dgk
thanks!

[danielbloduch]

Wired but I have similar issue with the sounds. Short sound on all notifications even if I set my own and also quite media and they vol up and down 😕