Phones have rattled for many years now ever since OIS has been a feature
Correct, phones with OIS do emit audible rattles or clicks when shaking them more than one would reasonably shake a phone.
My S24 Ultra started making clicking sounds when simply lifting the phone to talk on a call, or rotating the screen to watch a video. It's even audible in video recordings if the phone is moved around during the recording, like if you're in a moving vehicle.
Others that I have handled make no noises unless shaken violently.
Really disappointing, especially considering my last phone was a Sony Xperia 1 IV which alongside OIS, also has a variable telephoto. It also made no noise during regular day to day activities with the phone.
Samsung's authorised repair agent TMT First have said the phone is functioning as intended. Well, yes it is, the camera still functions.
Just like the car with an annoying rattle you can't find or the panel gap that doesn't line up with the rest still functions as a car.
The case has been escalated with Samsung now, with any luck they'll agree that something isn't right with my particular telephoto camera module!