I’ll get the phone back in the evening and I’ll meet you know as soon as possible.

Had to wait for almost a month for the speaker repair part to arrive.

Some proof from the Estonian authorized Apple store seller (Valge Klaar)

https://preview.redd.it/32siih5ac32c1.jpeg?width=1080&format=pjpg&auto=webp&s=d6676f97025c70ae93568bf7fc6aa0c10b7b813b

Send your phone to Apple, they replaced mine (Europe) cause this is a massive quality control issue, if you check the forums it has been reported previously. I even checked the store models, all had the same problem, from normal Iphone 15 to the Max Pro.

Test your phone with this song https://youtu.be/G5xSLbYMr-I?si=r0U_wDIhrG39ZlIi 1st 10 seconds it will rattle like crazy.