Say what you will about the aesthetics of the handset, it's proof that waterproof, user-replaceable batteries are absolutely possible on a consumer handset.
https://www.gsmarena.com/kyocera_torque_e6710-5270.php
https://www.turbosquid.com/3d-models/3ds-kyocera-torque-e671...
Also, why do we need proof from modern phones? We've had cheap plastic wrist watches that can be submerged and operated under water for decades. The secret? Stainless steel back, screwed on the plastic body with a rubber gasket in between. Why can't phones use this "outstanding" innovation from 60 years ago? I'm sure the likes of Apple, considering their enormous R&D budget, can figure it out into a modern solution.
[1] https://www.androidpolice.com/samsung-xcover6-pro-review/
Because it requires too much space. It works on watches because they are small, if you tried to screw in a phone back plate with 4 screws, it wouldn't seal at the sides, as pressure is too low.
>I'm sure the likes of Apple, considering their enormous R&D budget, can figure it out into a modern solution.
They already have found a way to tightly and reversibly seal a phone, which allows for repairs of components and is low cost. It is called glue and pretty much the optimal way to seal a phone.
You don't think Apple or Samsung can afford more screws?
>They already have found a way to tightly and reversibly seal a phone, which allows for repairs of components and is low cost. It is called glue and pretty much the optimal way to seal a phone.
Have you been paying attention to anything written on this thread? We don't need phones to be sealed with glue for water resistance as that's just a forced obsolescence design choice.