Louis Rossmann did a video on this and pointed out that there were phones that had IP67 (Samsung Galaxy S5) or even IP68 (some Sony phone) rating with user replaceable batteries. So yeah, they should be.
Not to mention there are a host of other products with ports and openings that are waterproof. Phones have slim packaging but rubber gaskets are even slimmer. My S21 Ultra is water resistant even with an open USB-C port.
Louis Rossmann did a video on this and pointed out that there were phones that had IP67 (Samsung Galaxy S5) or even IP68 (some Sony phone) rating with user replaceable batteries. So yeah, they should be.
Not to mention there are a host of other products with ports and openings that are waterproof. Phones have slim packaging but rubber gaskets are even slimmer. My S21 Ultra is water resistant even with an open USB-C port.